@uifabric/merge-styles/dist/merge-styles.d.ts

/**
 * Helper function whose role is supposed to express that regardless if T is a style object or style function,
 * it will always map to a style function.
 */
declare type __MapToFunctionType<T> = Extract<T, Function> extends never ? (...args: any[]) => Partial<T> : Extract<T, Function>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet - The first style set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet>(styleSet: TStyleSet | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet1 - The first style set to be concatenated.
 * @param styleSet2 - The second style set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet1, TStyleSet2>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet1 - The first style set to be concatenated.
 * @param styleSet2 - The second style set to be concatenated.
 * @param styleSet3 - The third style set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet1, TStyleSet2, TStyleSet3>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet1 - The first style set to be concatenated.
 * @param styleSet2 - The second style set to be concatenated.
 * @param styleSet3 - The third style set to be concatenated.
 * @param styleSet4 - The fourth style set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet1, TStyleSet2, TStyleSet3, TStyleSet4>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined, styleSet4: TStyleSet4 | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3> & ObjectOnly<TStyleSet4>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet1 - The first style set to be concatenated.
 * @param styleSet2 - The second style set to be concatenated.
 * @param styleSet3 - The third style set to be concatenated.
 * @param styleSet4 - The fourth style set to be concatenated.
 * @param styleSet5 - The fifth set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet1, TStyleSet2, TStyleSet3, TStyleSet4, TStyleSet5>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined, styleSet4: TStyleSet4 | false | null | undefined, styleSet5: TStyleSet5 | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3> & ObjectOnly<TStyleSet4> & ObjectOnly<TStyleSet5>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSet1 - The first style set to be concatenated.
 * @param styleSet2 - The second style set to be concatenated.
 * @param styleSet3 - The third style set to be concatenated.
 * @param styleSet4 - The fourth style set to be concatenated.
 * @param styleSet5 - The fifth set to be concatenated.
 * @param styleSet6 - The sixth set to be concatenated.
 */
export declare function concatStyleSets<TStyleSet1, TStyleSet2, TStyleSet3, TStyleSet4, TStyleSet5, TStyleSet6>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined, styleSet4: TStyleSet4 | false | null | undefined, styleSet5: TStyleSet5 | false | null | undefined, styleSet6: TStyleSet6 | false | null | undefined): IConcatenatedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3> & ObjectOnly<TStyleSet4> & ObjectOnly<TStyleSet5> & ObjectOnly<TStyleSet6>>;

/**
 * Combine a set of styles together (but does not register css classes).
 * @param styleSets - One or more stylesets to be merged (each param can also be falsy).
 */
export declare function concatStyleSets(...styleSets: (IStyleSet | false | null | undefined)[]): IConcatenatedStyleSet<any>;

/**
 * Concatenates style sets into one, but resolves functional sets using the given props.
 * @param styleProps - Props used to resolve functional sets.
 * @param allStyles - Style sets, which can be functions or objects.
 */
export declare function concatStyleSetsWithProps<TStyleProps, TStyleSet extends IStyleSet<TStyleSet>>(styleProps: TStyleProps, ...allStyles: (IStyleFunctionOrObject<TStyleProps, TStyleSet> | undefined)[]): DeepPartial<TStyleSet>;

/**
 * TypeScript type to return a deep partial object (each property can be undefined, recursively.)
 */
export declare type DeepPartial<T> = {
    [P in keyof T]?: T[P] extends (infer U)[] ? DeepPartial<U>[] : T[P] extends object ? DeepPartial<T[P]> : T[P];
};

declare type Diff<T extends keyof any, U extends keyof any> = ({
    [P in T]: P;
} & {
    [P in U]: never;
} & {
    [x: string]: never;
})[T];

/**
 * Registers a font face.
 * @public
 */
export declare function fontFace(font: IFontFace): void;

/**
 * A concatenated style set differs from `IStyleSet` in that subComponentStyles will always be a style function.
 */
export declare type IConcatenatedStyleSet<TStyleSet extends IStyleSet<TStyleSet>> = {
    [P in keyof Omit<TStyleSet, 'subComponentStyles'>]: IStyle;
} & {
    subComponentStyles?: {
        [P in keyof TStyleSet['subComponentStyles']]: IStyleFunction<any, any>;
    };
};

/**
 * CSP settings for the stylesheet
 */
export declare interface ICSPSettings {
    /**
     * Nonce to inject into script tag
     */
    nonce?: string;
}

declare type ICSSBaselinePositionRule = 'baseline' | 'last baseline' | 'first baseline';

declare type ICSSDisplayRule = 'block' | 'inline' | 'run-in' | 'flow' | 'flow-root' | 'table' | 'flex' | 'grid' | 'ruby' | 'block flow' | 'inline table' | 'flex run-in' | 'list-item' | 'list-item block' | 'list-item inline' | 'list-item flow' | 'list-item flow-root' | 'list-item block flow' | 'list-item block flow-root' | 'flow list-item block' | 'table-row-group' | 'table-header-group' | 'table-footer-group' | 'table-row' | 'table-cell' | 'table-column-group' | 'table-column' | 'table-caption' | 'ruby-base' | 'ruby-text' | 'ruby-base-container' | 'ruby-text-container' | 'contents' | 'none' | 'inline-block' | 'inline-table' | 'inline-flex' | 'inline-grid';

declare type ICSSOverflowAndSelfPositionRule = 'center' | 'start' | 'end' | 'self-start' | 'self-end' | 'flex-start' | 'flex-end' | 'safe center' | 'safe start' | 'safe end' | 'safe self-start' | 'safe self-end' | 'safe flex-start' | 'safe flex-end' | 'unsafe center' | 'unsafe start' | 'unsafe end' | 'unsafe self-start' | 'unsafe self-end' | 'unsafe flex-start' | 'unsafe flex-end';

declare type ICSSPercentageRule = string;

declare type ICSSPixelUnitRule = string | number;

export declare type ICSSRule = 'initial' | 'inherit' | 'unset';

/**
 * Font face definition.
 *
 * @public
 * {@docCategory IFontFace}
 */
export declare interface IFontFace extends IRawFontStyle {
    /**
     * Specifies the src of the font.
     */
    src?: string;
    /**
     * unicode-range allows you to set a specific range of characters to be downloaded
     * from a font (embedded using \@font-face) and made available for use on the current
     * page.
     */
    unicodeRange?: ICSSRule | string;
    /**
     * Determines how a font face is displayed based on whether and when it is downloaded
     * and ready to use.
     */
    fontDisplay?: 'auto' | 'block' | 'swap' | 'fallback' | 'optional';
    /**
     * Feature settings for the font.
     */
    fontFeatureSettings?: string;
}

export declare type IFontWeight = ICSSRule | 'normal' | 'bold' | 'bolder' | 'lighter' | '100' | 100 | '200' | 200 | '300' | 300 | '400' | 400 | '500' | 500 | '600' | 600 | '700' | 700 | '800' | 800 | '900' | 900;

/**
 * Keyframe definition.
 */
export declare type IKeyframes = Record<string, IRawStyle>;

declare type IMixBlendModes = ICSSRule | 'normal' | 'multiply' | 'screen' | 'overlay' | 'darken' | 'lighten' | 'color-dodge' | 'color-burn' | 'hard-light' | 'soft-light' | 'difference' | 'exclusion' | 'hue' | 'saturation' | 'color' | 'luminosity';

export declare const InjectionMode: {
    /**
     * Avoids style injection, use getRules() to read the styles.
     */
    none: 0;
    /**
     * Inserts rules using the insertRule api.
     */
    insertNode: 1;
    /**
     * Appends rules using appendChild.
     */
    appendChild: 2;
};

export declare type InjectionMode = typeof InjectionMode[keyof typeof InjectionMode];

/**
 * A processed style set is one which the set of styles associated with each area has been converted
 * into a class name. Additionally, all subComponentStyles are style functions.
 */
export declare type IProcessedStyleSet<TStyleSet extends IStyleSet<TStyleSet>> = {
    [P in keyof Omit<TStyleSet, 'subComponentStyles'>]: string;
} & {
    subComponentStyles: {
        [P in keyof TStyleSet['subComponentStyles']]: __MapToFunctionType<TStyleSet['subComponentStyles'] extends infer J ? (P extends keyof J ? J[P] : never) : never>;
    };
};

/**
 * The base font style.
 * {@docCategory IRawFontStyle}
 */
export declare interface IRawFontStyle {
    /**
     * The font property is shorthand that allows you to do one of two things: you can
     * either set up six of the most mature font properties in one line, or you can set
     *  one of a choice of keywords to adopt a system font setting.
     */
    font?: ICSSRule | string;
    /**
     * The font-family property allows one or more font family names and/or generic family
     * names to be specified for usage on the selected element(s)' text. The browser then
     * goes through the list; for each character in the selection it applies the first
     * font family that has an available glyph for that character.
     */
    fontFamily?: ICSSRule | string;
    /**
     * The font-kerning property allows contextual adjustment of inter-glyph spacing, i.e.
     * the spaces between the characters in text. This property controls <bold>metric
     * kerning</bold> - that utilizes adjustment data contained in the font. Optical
     * Kerning is not supported as yet.
     */
    fontKerning?: ICSSRule | string;
    /**
     * Specifies the size of the font. Used to compute em and ex units.
     * See CSS 3 font-size property https://www.w3.org/TR/css-fonts-3/#propdef-font-size
     */
    fontSize?: ICSSRule | 'xx-small' | 'x-small' | 'small' | 'medium' | 'large' | 'x-large' | 'xx-large' | 'larger' | 'smaller' | ICSSPixelUnitRule | ICSSPercentageRule;
    /**
     * The font-size-adjust property adjusts the font-size of the fallback fonts defined
     * with font-family, so that the x-height is the same no matter what font is used.
     * This preserves the readability of the text when fallback happens.
     * See CSS 3 font-size-adjust property
     * https://www.w3.org/TR/css-fonts-3/#propdef-font-size-adjust
     */
    fontSizeAdjust?: ICSSRule | 'none' | number | string;
    /**
     * Allows you to expand or condense the widths for a normal, condensed, or expanded
     * font face.
     * See CSS 3 font-stretch property
     * https://drafts.csswg.org/css-fonts-3/#propdef-font-stretch
     */
    fontStretch?: ICSSRule | 'normal' | 'ultra-condensed' | 'extra-condensed' | 'condensed' | 'semi-condensed' | 'semi-expanded' | 'expanded' | 'extra-expanded' | 'ultra-expanded' | string;
    /**
     * The font-style property allows normal, italic, or oblique faces to be selected.
     * Italic forms are generally cursive in nature while oblique faces are typically
     * sloped versions of the regular face. Oblique faces can be simulated by artificially
     * sloping the glyphs of the regular face.
     * See CSS 3 font-style property https://www.w3.org/TR/css-fonts-3/#propdef-font-style
     */
    fontStyle?: ICSSRule | 'normal' | 'italic' | 'oblique' | string;
    /**
     * This value specifies whether the user agent is allowed to synthesize bold or
     *  oblique font faces when a font family lacks bold or italic faces.
     */
    fontSynthesis?: ICSSRule | string;
    /**
     * The font-variant property enables you to select the small-caps font within a font
     * family.
     */
    fontVariant?: ICSSRule | string;
    /**
     * Fonts can provide alternate glyphs in addition to default glyph for a character.
     * This property provides control over the selection of these alternate glyphs.
     */
    fontVariantAlternates?: ICSSRule | string;
    /**
     * Specifies the weight or boldness of the font.
     * See CSS 3 'font-weight' property https://www.w3.org/TR/css-fonts-3/#propdef-font-weight
     */
    fontWeight?: IFontWeight | string;
}

/**
 * IRawStyle extends a raw style object, but allows selectors to be defined
 * under the selectors node.
 * @public
 * {@docCategory IRawStyle}
 */
export declare interface IRawStyle extends IRawStyleBase {
    /**
     * Allow css variables, strings, objects. While we should have more strict typing
     * here, partners are broken in many unpredictable cases where typescript can't infer
     * the right typing. Loosening the typing to both allow for css variables and other things.
     */
    [key: string]: any;
    /**
     * Display name for the style.
     */
    displayName?: string;
    /**
     * @deprecated - The selectors wrapper is no longer required. You may add selectors as siblings to other
     * style properties, like most css-in-js libraries support.
     */
    selectors?: {
        [key: string]: IStyle;
    };
}

/**
 * All raw style properties.
 *
 * @public
 * {@docCategory IRawStyleBase}
 */
export declare interface IRawStyleBase extends IRawFontStyle {
    /**
     * (Ms specific) constrast adjust rule.
     */
    MsHighContrastAdjust?: ICSSRule | string;
    /**
     * (Ms specific) scrollbar behavior adjust rule.
     */
    MsOverflowStyle?: 'auto' | 'none' | 'scrollbar' | '-ms-autohiding-scrollbar' | string;
    /**
     * (Moz specific) font smoothing directive.
     */
    MozOsxFontSmoothing?: 'none' | 'antialiased' | 'grayscale' | 'subpixel-antialiased' | string;
    /**
     * (Webkit specific) font smoothing directive.
     */
    WebkitFontSmoothing?: 'none' | 'antialiased' | 'grayscale' | 'subpixel-antialiased' | string;
    /**
     * (Webkit specific) momentum scrolling on iOS devices
     */
    WebkitOverflowScrolling?: 'auto' | 'touch' | string;
    /**
     * (Webkit specific) color of the highlight that appears overa  link while it's being tapped
     */
    WebkitTapHighlightColor?: string;
    /**
     * (Webkit specific) controls the text inflation algorithm used on some smartphones and tablets.
     * Other browsers will ignore this property.
     */
    WebkitTextSizeAdjust?: 'none' | 'auto' | ICSSPercentageRule | ICSSRule | string;
    /**
     * Aligns a flex container's lines within the flex container when there is extra space
     * in the cross-axis, similar to how justify-content aligns individual items within the main-axis.
     */
    alignContent?: ICSSRule | 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around' | 'stretch' | string;
    /**
     * Sets the default alignment in the cross axis for all of the flex container's items,
     * including anonymous flex items, similarly to how justify-content aligns items along the main axis.
     */
    alignItems?: ICSSRule | 'flex-start' | 'flex-end' | 'center' | 'baseline' | 'stretch' | string;
    /**
     * Aligns the box (as the alignment subject) within its containing block (as the alignment container)
     * along the block/column/cross axis of the alignment container.
     *
     * See CSS align-self property
     * https://www.w3.org/TR/css-align-3/#propdef-align-self
     */
    alignSelf?: ICSSRule | 'auto' | 'normal' | 'stretch' | ICSSBaselinePositionRule | ICSSOverflowAndSelfPositionRule | string;
    /**
     * This property allows precise alignment of elements, such as graphics, that do not
     * have a baseline-table or lack the desired baseline in their baseline-table. With the
     * alignment-adjust property, the position of the baseline identified by the
     * alignment-baseline can be explicitly determined. It also determines precisely
     * the alignment point for each glyph within a textual element.
     */
    alignmentAdjust?: ICSSRule | string;
    /**
     * Specifies how an object is aligned with respect to its parent. This property specifies
     * which baseline of this element is to be aligned with the corresponding baseline of the
     * parent. For example, this allows alphabetic baselines in Roman text to stay aligned
     * across font size changes. It defaults to the baseline with the same name as the computed
     * value of the alignment-baseline property.
     */
    alignmentBaseline?: ICSSRule | string;
    /**
     * The animation CSS property is a shorthand property for the various animation properties:
     * `animation-name`, `animation-duration`, `animation-timing-function`, `animation-delay`,
     * `animation-iteration-count`, `animation-direction`, `animation-fill-mode`, and
     * `animation-play-state`.
     */
    animation?: ICSSRule | string;
    /**
     * Defines a length of time to elapse before an animation starts, allowing an animation to begin execution
     * some time after it is applied.
     */
    animationDelay?: ICSSRule | string;
    /**
     * Defines whether an animation should run in reverse on some or all cycles.
     */
    animationDirection?: ICSSRule | string;
    /**
     * Specifies the length an animation takes to finish. Default value is 0, meaning
     * there will be no animation.
     */
    animationDuration?: ICSSRule | string;
    /**
     * The animation-fill-mode CSS property specifies how a CSS animation should apply
     * styles to its target before and after its execution.
     */
    animationFillMode?: ICSSRule | 'none' | 'forwards' | 'backwards' | 'both' | string;
    /**
     * Specifies how many times an animation cycle should play.
     */
    animationIterationCount?: ICSSRule | string;
    /**
     * Defines the list of animations that apply to the element.
     */
    animationName?: ICSSRule | string;
    /**
     * Defines whether an animation is running or paused.
     */
    animationPlayState?: ICSSRule | string;
    /**
     * The animation-timing-function specifies the speed curve of an animation.
     */
    animationTimingFunction?: ICSSRule | string;
    /**
     * Allows changing the style of any element to platform-based interface elements or
     * vice versa.
     */
    appearance?: ICSSRule | string;
    /**
     * Lets you apply graphical effects such as blurring or color shifting to the area
     * behind an element. Because it applies to everything behind the element, to see
     * the effect you must make the element or its background at least partially transparent.
     */
    backdropFilter?: ICSSRule | string;
    /**
     * Edge requires the -webkit prefix backdrop-filter.
     */
    WebkitBackdropFilter?: ICSSRule | string;
    /**
     * Determines whether or not the “back” side of a transformed element is visible when
     * facing the viewer.
     */
    backfaceVisibility?: ICSSRule | string;
    /**
     * Shorthand property to set the values for one or more of:
     * background-clip, background-color, background-image,
     * background-origin, background-position, background-repeat,
     * background-size, and background-attachment.
     */
    background?: ICSSRule | string;
    /**
     * If a background-image is specified, this property determines
     * whether that image's position is fixed within the viewport,
     * or scrolls along with its containing block.
     * See CSS 3 background-attachment property https://drafts.csswg.org/css-backgrounds-3/#the-background-attachment
     */
    backgroundAttachment?: ICSSRule | 'scroll' | 'fixed' | 'local' | string;
    /**
     * This property describes how the element's background images should blend with each
     * other and the element's background color. The value is a list of blend modes that
     * corresponds to each background image. Each element in the list will apply to the
     * corresponding element of background-image. If a property doesn’t have enough
     * comma-separated values to match the number of layers, the UA must calculate its
     * used value by repeating the list of values until there are enough.
     */
    backgroundBlendMode?: ICSSRule | string;
    /**
     * The background-clip CSS property specifies if an element's background, whether a
     * `<color>` or an `<image>`, extends underneath its border.
     *
     * \* Does not work in IE
     *
     * \* The `text` value is experimental and should not be used in production code.
     */
    backgroundClip?: ICSSRule | 'border-box' | 'padding-box' | 'content-box' | 'text' | string;
    /**
     * Sets the background color of an element.
     */
    backgroundColor?: ICSSRule | string;
    /**
     * Sets a compositing style for background images and colors.
     */
    backgroundComposite?: ICSSRule | string;
    /**
     * Applies one or more background images to an element. These can be any valid CSS
     * image, including url() paths to image files or CSS gradients.
     */
    backgroundImage?: ICSSRule | string;
    /**
     * Specifies what the background-position property is relative to.
     */
    backgroundOrigin?: ICSSRule | string;
    /**
     * Sets the position of a background image.
     */
    backgroundPosition?: ICSSRule | string;
    /**
     * Background-repeat defines if and how background images will be repeated after they
     * have been sized and positioned
     */
    backgroundRepeat?: ICSSRule | string;
    /**
     * Sets the size of background images
     */
    backgroundSize?: ICSSRule | string;
    /**
     * Shorthand property that defines the different properties of all four sides of an
     * element's border in a single declaration. It can be used to set border-width,
     * border-style and border-color, or a subset of these.
     */
    border?: ICSSRule | 0 | string;
    /**
     * Shorthand that sets the values of border-bottom-color,
     * border-bottom-style, and border-bottom-width.
     */
    borderBottom?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the color of the bottom border of an element.
     */
    borderBottomColor?: ICSSRule | string;
    /**
     * Defines the shape of the border of the bottom-left corner.
     */
    borderBottomLeftRadius?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Defines the shape of the border of the bottom-right corner.
     */
    borderBottomRightRadius?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the line style of the bottom border of a box.
     */
    borderBottomStyle?: ICSSRule | string;
    /**
     * Sets the width of an element's bottom border. To set all four borders, use the
     * border-width shorthand property which sets the values simultaneously for
     * border-top-width, border-right-width, border-bottom-width, and border-left-width.
     */
    borderBottomWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Border-collapse can be used for collapsing the borders between table cells
     */
    borderCollapse?: ICSSRule | string;
    /**
     * The CSS border-color property sets the color of an element's four borders. This
     * property can have from one to four values, made up of the elementary properties:
     *      •       border-top-color
     *      •       border-right-color
     *      •       border-bottom-color
     *      •       border-left-color The default color is the currentColor of each of
     * these values.
     * If you provide one value, it sets the color for the element. Two values set the
     * horizontal and vertical values, respectively. Providing three values sets the top,
     * vertical, and bottom values, in that order. Four values set all for sides: top,
     * right, bottom, and left, in that order.
     */
    borderColor?: ICSSRule | string;
    /**
     * Specifies different corner clipping effects, such as scoop (inner curves), bevel
     * (straight cuts) or notch (cut-off rectangles). Works along with border-radius to
     * specify the size of each corner effect.
     */
    borderCornerShape?: ICSSRule | string;
    /**
     * The property border-image-source is used to set the image to be used instead of
     * the border style. If this is set to none the border-style is used instead.
     */
    borderImageSource?: ICSSRule | string;
    /**
     * The border-image-width CSS property defines the offset to use for dividing the
     * border image in nine parts, the top-left corner, central top edge, top-right-corner,
     * central right edge, bottom-right corner, central bottom edge, bottom-left corner,
     * and central right edge. They represent inward distance from the top, right, bottom,
     * and left edges.
     */
    borderImageWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Shorthand property that defines the border-width, border-style and border-color of
     * an element's left border in a single declaration. Note that you can use the
     * corresponding longhand properties to set specific individual properties of the left
     * border — border-left-width, border-left-style and border-left-color.
     */
    borderLeft?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The CSS border-left-color property sets the color of an element's left border. This
     *  page explains the border-left-color value, but often you will find it more
     * convenient to fix the border's left color as part of a shorthand set, either
     * border-left or border-color. Colors can be defined several ways. For more
     * information, see Usage.
     */
    borderLeftColor?: ICSSRule | string;
    /**
     * Sets the style of an element's left border. To set all four borders, use the
     * shorthand property, border-style. Otherwise, you can set the borders individually
     * with border-top-style, border-right-style, border-bottom-style, border-left-style.
     */
    borderLeftStyle?: ICSSRule | string;
    /**
     * Sets the width of an element's left border. To set all four borders, use the
     * border-width shorthand property which sets the values simultaneously for
     * border-top-width, border-right-width, border-bottom-width, and border-left-width.
     */
    borderLeftWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Defines how round the border's corners are.
     */
    borderRadius?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Shorthand property that defines the border-width, border-style and border-color of
     * an element's right border in a single declaration. Note that you can use the
     * corresponding longhand properties to set specific individual properties of the
     * right border — border-right-width, border-right-style and border-right-color.
     */
    borderRight?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the color of an element's right border. This page explains the
     * border-right-color value, but often you will find it more convenient to fix the
     * border's right color as part of a shorthand set, either border-right or border-color.
     * Colors can be defined several ways. For more information, see Usage.
     */
    borderRightColor?: ICSSRule | string;
    /**
     * Sets the style of an element's right border. To set all four borders, use the
     * shorthand property, border-style. Otherwise, you can set the borders individually
     * with border-top-style, border-right-style, border-bottom-style, border-left-style.
     */
    borderRightStyle?: ICSSRule | string;
    /**
     * Sets the width of an element's right border. To set all four borders, use the
     * border-width shorthand property which sets the values simultaneously for
     * border-top-width, border-right-width, border-bottom-width, and border-left-width.
     */
    borderRightWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Specifies the distance between the borders of adjacent cells.
     */
    borderSpacing?: ICSSRule | string;
    /**
     * Sets the style of an element's four borders. This property can have from one to
     * four values. With only one value, the value will be applied to all four borders;
     * otherwise, this works as a shorthand property for each of border-top-style,
     *  border-right-style, border-bottom-style, border-left-style, where each border
     *  style may be assigned a separate value.
     */
    borderStyle?: ICSSRule | string;
    /**
     * Shorthand property that defines the border-width, border-style and border-color of
     * an element's top border in a single declaration. Note that you can use the
     * corresponding longhand properties to set specific individual properties of the top
     * border — border-top-width, border-top-style and border-top-color.
     */
    borderTop?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the color of an element's top border. This page explains the border-top-color
     * value, but often you will find it more convenient to fix the border's top color as
     * part of a shorthand set, either border-top or border-color.
     * Colors can be defined several ways. For more information, see Usage.
     */
    borderTopColor?: ICSSRule | string;
    /**
     * Sets the rounding of the top-left corner of the element.
     */
    borderTopLeftRadius?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the rounding of the top-right corner of the element.
     */
    borderTopRightRadius?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the style of an element's top border. To set all four borders, use the
     * shorthand property, border-style. Otherwise, you can set the borders individually
     * with border-top-style, border-right-style, border-bottom-style, border-left-style.
     */
    borderTopStyle?: ICSSRule | string;
    /**
     * Sets the width of an element's top border. To set all four borders, use the
     * border-width shorthand property which sets the values simultaneously for
     * border-top-width, border-right-width, border-bottom-width, and border-left-width.
     */
    borderTopWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the width of an element's four borders. This property can have from one to
     * four values. This is a shorthand property for setting values simultaneously for
     * border-top-width, border-right-width, border-bottom-width, and border-left-width.
     */
    borderWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * This property specifies how far an absolutely positioned box's bottom margin edge
     * is offset above the bottom edge of the box's containing block. For relatively
     * positioned boxes, the offset is with respect to the bottom edges of the box itself
     * (i.e., the box is given a position in the normal flow, then offset from that
     * position according to these properties).
     */
    bottom?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Breaks a box into fragments creating new borders, padding and repeating backgrounds
     * or lets it stay as a continuous box on a page break, column break, or, for inline
     * elements, at a line break.
     */
    boxDecorationBreak?: ICSSRule | string;
    /**
     * Cast a drop shadow from the frame of almost any element.
     * MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/box-shadow
     */
    boxShadow?: ICSSRule | string;
    /**
     * The CSS box-sizing property is used to alter the default CSS box model used to
     * calculate width and height of the elements.
     */
    boxSizing?: ICSSRule | 'border-box' | 'content-box' | string;
    /**
     * The CSS break-after property allows you to force a break on multi-column layouts.
     * More specifically, it allows you to force a break after an element. It allows you
     * to determine if a break should occur, and what type of break it should be. The
     * break-after CSS property describes how the page, column or region break behaves
     * after the generated box. If there is no generated box, the property is ignored.
     */
    breakAfter?: ICSSRule | string;
    /**
     * Control page/column/region breaks that fall above a block of content
     */
    breakBefore?: ICSSRule | string;
    /**
     * Control page/column/region breaks that fall within a block of content
     */
    breakInside?: ICSSRule | string;
    /**
     * The clear CSS property specifies if an element can be positioned next to or must be
     * positioned below the floating elements that precede it in the markup.
     */
    clear?: ICSSRule | string;
    /**
     * Clipping crops an graphic, so that only a portion of the graphic is rendered, or
     * filled. This clip-rule property, when used with the clip-path property, defines
     * which clip rule, or algorithm, to use when filling the different parts of a graphics.
     */
    clipRule?: ICSSRule | string;
    /**
     * The color property sets the color of an element's foreground content (usually text),
     * accepting any standard CSS color from keywords and hex values to RGB(a) and HSL(a).
     */
    color?: ICSSRule | string;
    /**
     * Describes the number of columns of the element.
     * See CSS 3 column-count property https://www.w3.org/TR/css3-multicol/#cc
     */
    columnCount?: ICSSRule | number | 'auto' | string;
    /**
     * Specifies how to fill columns (balanced or sequential).
     */
    columnFill?: ICSSRule | string;
    /**
     * The column-gap property controls the width of the gap between columns in multi-column
     * elements.
     */
    columnGap?: ICSSRule | string;
    /**
     * Sets the width, style, and color of the rule between columns.
     */
    columnRule?: ICSSRule | string;
    /**
     * Specifies the color of the rule between columns.
     */
    columnRuleColor?: ICSSRule | string;
    /**
     * Specifies the width of the rule between columns.
     */
    columnRuleWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The column-span CSS property makes it possible for an element to span across all
     * columns when its value is set to all. An element that spans more than one column
     * is called a spanning element.
     */
    columnSpan?: ICSSRule | string;
    /**
     * Specifies the width of columns in multi-column elements.
     */
    columnWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * This property is a shorthand property for setting column-width and/or column-count.
     */
    columns?: ICSSRule | string;
    /**
     * Content for pseudo selectors.
     */
    content?: string;
    /**
     * The counter-increment property accepts one or more names of counters (identifiers),
     * each one optionally followed by an integer which specifies the value by which the
     * counter should be incremented (e.g. if the value is 2, the counter increases by 2
     * each time it is invoked).
     */
    counterIncrement?: ICSSRule | string;
    /**
     * The counter-reset property contains a list of one or more names of counters, each
     * one optionally followed by an integer (otherwise, the integer defaults to 0.) Each
     * time the given element is invoked, the counters specified by the property are set to the given integer.
     */
    counterReset?: ICSSRule | string;
    /**
     * The cue property specifies sound files (known as an "auditory icon") to be played by
     * speech media agents before and after presenting an element's content; if only one
     * file is specified, it is played both before and after. The volume at which the
     * file(s) should be played, relative to the volume of the main element, may also be
     * specified. The icon files may also be set separately with the cue-before and
     * cue-after properties.
     */
    cue?: ICSSRule | string;
    /**
     * The cue-after property specifies a sound file (known as an "auditory icon") to be
     * played by speech media agents after presenting an element's content; the volume at
     * which the file should be played may also be specified. The shorthand property cue
     * sets cue sounds for both before and after the element is presented.
     */
    cueAfter?: ICSSRule | string;
    /**
     * Specifies the mouse cursor displayed when the mouse pointer is over an element.
     */
    cursor?: ICSSRule | string;
    /**
     * The direction CSS property specifies the text direction/writing direction. The rtl
     * is used for Hebrew or Arabic text, the ltr is for other languages.
     */
    direction?: ICSSRule | string;
    /**
     * This property specifies the type of rendering box used for an element. It is a
     * shorthand property for many other display properties.
     * W3: https://www.w3.org/TR/css-display-3/#the-display-properties
     * MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/display
     */
    display?: ICSSRule | ICSSDisplayRule | string;
    /**
     * The ‘fill’ property paints the interior of the given graphical element. The area to
     * be painted consists of any areas inside the outline of the shape. To determine the
     * inside of the shape, all subpaths are considered, and the interior is determined
     * according to the rules associated with the current value of the ‘fill-rule’
     * property. The zero-width geometric outline of a shape is included in the area to be
     * painted.
     */
    fill?: ICSSRule | string;
    /**
     * SVG: Specifies the opacity of the color or the content the current object is filled
     * with.
     * See SVG 1.1 https://www.w3.org/TR/SVG/painting.html#FillOpacityProperty
     */
    fillOpacity?: ICSSRule | number;
    /**
     * The ‘fill-rule’ property indicates the algorithm which is to be used to determine
     * what parts of the canvas are included inside the shape. For a simple,
     * non-intersecting path, it is intuitively clear what region lies "inside"; however,
     * for a more complex path, such as a path that intersects itself or where one subpath
     * encloses another, the interpretation of "inside" is not so obvious.
     * The ‘fill-rule’ property provides two options for how the inside of a shape is
     * determined:
     */
    fillRule?: ICSSRule | string;
    /**
     * Applies various image processing effects. This property is largely unsupported. See
     * Compatibility section for more information.
     */
    filter?: ICSSRule | string;
    /**
     * Shorthand for `flex-grow`, `flex-shrink`, and `flex-basis`.
     */
    flex?: ICSSRule | string | number;
    /**
     * The flex-basis CSS property describes the initial main size of the flex item before
     * any free space is distributed according to the flex factors described in the flex
     * property (flex-grow and flex-shrink).
     */
    flexBasis?: ICSSRule | string | number;
    /**
     * The flex-direction CSS property describes how flex items are placed in the flex
     * container, by setting the direction of the flex container's main axis.
     */
    flexDirection?: ICSSRule | 'row' | 'row-reverse' | 'column' | 'column-reverse' | string;
    /**
     * The flex-flow CSS property defines the flex container's main and cross axis. It is
     * a shorthand property for the flex-direction and flex-wrap properties.
     */
    flexFlow?: ICSSRule | string;
    /**
     * Specifies the flex grow factor of a flex item.
     * See CSS flex-grow property https://drafts.csswg.org/css-flexbox-1/#flex-grow-property
     */
    flexGrow?: ICSSRule | number | string;
    /**
     * Specifies the flex shrink factor of a flex item.
     * See CSS flex-shrink property https://drafts.csswg.org/css-flexbox-1/#flex-shrink-property
     */
    flexShrink?: ICSSRule | number | string;
    /**
     * Specifies whether flex items are forced into a single line or can be wrapped onto
     * multiple lines. If wrapping is allowed, this property also enables you to control
     * the direction in which lines are stacked.
     * See CSS flex-wrap property https://drafts.csswg.org/css-flexbox-1/#flex-wrap-property
     */
    flexWrap?: ICSSRule | 'nowrap' | 'wrap' | 'wrap-reverse' | string;
    /**
     * Elements which have the style float are floated horizontally. These elements can
     * move as far to the left or right of the containing element. All elements after
     * the floating element will flow around it, but elements before the floating element
     * are not impacted. If several floating elements are placed after each other, they
     * will float next to each other as long as there is room.
     */
    float?: ICSSRule | string;
    /**
     * Flows content from a named flow (specified by a corresponding flow-into) through
     * selected elements to form a dynamic chain of layout regions.
     */
    flowFrom?: ICSSRule | string;
    /**
     * The property which allows authors to opt particular elements out of forced colors mode,
     * restoring full control over the colors to CSS. Currently it's only supported in Edge Chromium.
     */
    forcedColorAdjust?: 'auto' | 'none' | string;
    /**
     * Lays out one or more grid items bound by 4 grid lines. Shorthand for setting
     * grid-column-start, grid-column-end, grid-row-start, and grid-row-end in a single
     * declaration.
     */
    gridArea?: ICSSRule | string;
    /**
     * Specifies the size of an implicitly-created grid column track
     */
    gridAutoColumns?: ICSSRule | string;
    /**
     * Controls how the auto-placement algorithm works,
     * specifying exactly how auto-placed items get flowed into the grid.
     */
    gridAutoFlow?: ICSSRule | string;
    /**
     * Specifies the size of an implicitly-created grid column track
     */
    gridAutoRows?: ICSSRule | string;
    /**
     * Controls a grid item's placement in a grid area, particularly grid position and a
     * grid span. Shorthand for setting grid-column-start and grid-column-end in a single
     * declaration.
     */
    gridColumn?: ICSSRule | string;
    /**
     * Controls a grid item's placement in a grid area as well as grid position and a
     * grid span. The grid-column-end property (with grid-row-start, grid-row-end, and
     * grid-column-start) determines a grid item's placement by specifying the grid lines
     * of a grid item's grid area.
     */
    gridColumnEnd?: ICSSRule | string;
    /**
     * Sets the size of the gap (gutter) between an element's columns
     */
    gridColumnGap?: ICSSRule | string;
    /**
     * Determines a grid item's placement by specifying the starting grid lines of a grid
     * item's grid area . A grid item's placement in a grid area consists of a grid
     * position and a grid span. See also ( grid-row-start, grid-row-end, and
     * grid-column-end)
     */
    gridColumnStart?: ICSSRule | string;
    /**
     * Specifies the gaps (gutters) between grid rows and columns. It is a shorthand
     * for grid-row-gap and grid-column-gap.
     */
    gridGap?: ICSSRule | string;
    /**
     * Gets or sets a value that indicates which row an element within a Grid should
     * appear in. Shorthand for setting grid-row-start and grid-row-end in a single
     * declaration.
     */
    gridRow?: ICSSRule | string;
    /**
     * Determines a grid item’s placement by specifying the block-end. A grid item's
     * placement in a grid area consists of a grid position and a grid span. The
     * grid-row-end property (with grid-row-start, grid-column-start, and grid-column-end)
     * determines a grid item's placement by specifying the grid lines of a grid item's
     * grid area.
     */
    gridRowEnd?: ICSSRule | string;
    /**
     * Sets the size of the gap (gutter) between an element's grid rows
     */
    gridRowGap?: ICSSRule | string;
    /**
     * Specifies a grid item’s start position within the grid row by contributing a line,
     * a span, or nothing (automatic) to its grid placement, thereby specifying the
     * inline-start edge of its grid area
     */
    gridRowStart?: ICSSRule | string;
    /**
     * Specifies a row position based upon an integer location, string value, or desired
     * row size.
     * css/properties/grid-row is used as short-hand for grid-row-position and
     * grid-row-position
     */
    gridRowPosition?: ICSSRule | string;
    /**
     * Specifies named grid areas which are not associated with any particular grid item,
     * but can be referenced from the grid-placement properties. The syntax of the
     * grid-template-areas property also provides a visualization of the structure of the
     * grid, making the overall layout of the grid container easier to understand.
     */
    gridTemplate?: ICSSRule | string;
    /**
     * Specifies named grid areas
     */
    gridTemplateAreas?: ICSSRule | string;
    /**
     * Specifies (with grid-template-rows) the line names and track sizing functions of
     * the grid. Each sizing function can be specified as a length, a percentage of the
     * grid container’s size, a measurement of the contents occupying the column or row,
     * or a fraction of the free space in the grid.
     */
    gridTemplateColumns?: ICSSRule | string;
    /**
     * Specifies (with grid-template-columns) the line names and track sizing functions of
     * the grid. Each sizing function can be specified as a length, a percentage of the
     * grid container’s size, a measurement of the contents occupying the column or row,
     * or a fraction of the free space in the grid.
     */
    gridTemplateRows?: ICSSRule | string;
    /**
     * Sets the height of an element. The content area of the element height does not
     * include the padding, border, and margin of the element.
     */
    height?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Specifies the minimum number of characters in a hyphenated word
     */
    hyphenateLimitChars?: ICSSRule | string;
    /**
     * Indicates the maximum number of successive hyphenated lines in an element. The
     * ‘no-limit’ value means that there is no limit.
     */
    hyphenateLimitLines?: ICSSRule | string;
    /**
     * Specifies the maximum amount of trailing whitespace (before justification) that may
     * be left in a line before hyphenation is triggered to pull part of a word from the
     * next line back up into the current one.
     */
    hyphenateLimitZone?: ICSSRule | string;
    /**
     * Specifies whether or not words in a sentence can be split by the use of a manual or
     * automatic hyphenation mechanism.
     */
    hyphens?: ICSSRule | string;
    /**
     * Defines how the browser distributes space between and around flex items
     * along the main-axis of their container.
     * See CSS justify-content property
     * https://www.w3.org/TR/css-flexbox-1/#justify-content-property
     */
    justifyContent?: ICSSRule | 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around' | 'space-evenly' | 'stretch' | string;
    /**
     * Justifies the box (as the alignment subject) within its containing block (as the alignment container)
     * along the inline/row/main axis of the alignment container.
     *
     * See CSS jusitfy-self property
     * https://www.w3.org/TR/css-align-3/#propdef-justify-self
     */
    justifySelf?: ICSSRule | 'auto' | 'normal' | 'stretch' | ICSSBaselinePositionRule | ICSSOverflowAndSelfPositionRule | 'left' | 'right' | 'safe left' | 'safe right' | 'unsafe left' | 'unsafe right' | string;
    /**
     * Sets the left position of an element relative to the nearest ancestor that is set
     * to position absolute, relative, or fixed.
     */
    left?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The letter-spacing CSS property specifies the spacing behavior between text
     * characters.
     */
    letterSpacing?: ICSSRule | string;
    /**
     * Specifies the height of an inline block level element.
     * See CSS 2.1 line-height property https://www.w3.org/TR/CSS21/visudet.html#propdef-line-height
     */
    lineHeight?: ICSSRule | 'normal' | ICSSPixelUnitRule | ICSSPercentageRule;
    /**
     * Shorthand property that sets the list-style-type, list-style-position and
     * list-style-image properties in one declaration.
     */
    listStyle?: ICSSRule | string;
    /**
     * This property sets the image that will be used as the list item marker. When the
     * image is available, it will replace the marker set with the 'list-style-type'
     * marker. That also means that if the image is not available, it will show the style
     * specified by list-style-property
     */
    listStyleImage?: ICSSRule | string;
    /**
     * Specifies if the list-item markers should appear inside or outside the content flow.
     */
    listStylePosition?: ICSSRule | string;
    /**
     * Specifies the type of list-item marker in a list.
     */
    listStyleType?: ICSSRule | string;
    /**
     * The margin property is shorthand to allow you to set all four margins of an element
     * at once. Its equivalent longhand properties are margin-top, margin-right,
     * margin-bottom and margin-left. Negative values are also allowed.
     */
    margin?: ICSSRule | ICSSPixelUnitRule;
    /**
     * margin-bottom sets the bottom margin of an element.
     */
    marginBottom?: ICSSRule | ICSSPixelUnitRule;
    /**
     * margin-left sets the left margin of an element.
     */
    marginLeft?: ICSSRule | ICSSPixelUnitRule;
    /**
     * margin-right sets the right margin of an element.
     */
    marginRight?: ICSSRule | ICSSPixelUnitRule;
    /**
     * margin-top sets the top margin of an element.
     */
    marginTop?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The marquee-direction determines the initial direction in which the marquee content moves.
     */
    marqueeDirection?: ICSSRule | string;
    /**
     * The 'marquee-style' property determines a marquee's scrolling behavior.
     */
    marqueeStyle?: ICSSRule | string;
    /**
     * This property is shorthand for setting mask-image, mask-mode, mask-repeat,
     * mask-position, mask-clip, mask-origin, mask-composite and mask-size. Omitted
     * values are set to their original properties' initial values.
     */
    mask?: ICSSRule | string;
    /**
     * This property is shorthand for setting mask-border-source, mask-border-slice,
     * mask-border-width, mask-border-outset, and mask-border-repeat. Omitted values
     * are set to their original properties' initial values.
     */
    maskBorder?: ICSSRule | string;
    /**
     * This property specifies how the images for the sides and the middle part of the
     * mask image are scaled and tiled. The first keyword applies to the horizontal
     * sides, the second one applies to the vertical ones. If the second keyword is
     * absent, it is assumed to be the same as the first, similar to the CSS
     * border-image-repeat property.
     */
    maskBorderRepeat?: ICSSRule | string;
    /**
     * This property specifies inward offsets from the top, right, bottom, and left
     * edges of the mask image, dividing it into nine regions: four corners, four
     * edges, and a middle. The middle image part is discarded and treated as fully
     * transparent black unless the fill keyword is present. The four values set the
     * top, right, bottom and left offsets in that order, similar to the CSS
     * border-image-slice property.
     */
    maskBorderSlice?: ICSSRule | string;
    /**
     * Specifies an image to be used as a mask. An image that is empty, fails to
     * download, is non-existent, or cannot be displayed is ignored and does not mask
     * the element.
     */
    maskBorderSource?: ICSSRule | string;
    /**
     * This property sets the width of the mask box image, similar to the CSS
     * border-image-width property.
     */
    maskBorderWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Determines the mask painting area, which defines the area that is affected by
     * the mask. The painted content of an element may be restricted to this area.
     */
    maskClip?: ICSSRule | string;
    /**
     * For elements rendered as a single box, specifies the mask positioning area. For
     * elements rendered as multiple boxes (e.g., inline boxes on several lines, boxes
     * on several pages) specifies which boxes box-decoration-break operates on to
     * determine the mask positioning area(s).
     */
    maskOrigin?: ICSSRule | string;
    /**
     * This property must not be used. It is no longer included in any standard or
     * standard track specification, nor is it implemented in any browser. It is only
     * used when the text-align-last property is set to size. It controls allowed
     * adjustments of font-size to fit line content.
     */
    maxFontSize?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the maximum height for an element. It prevents the height of the element to
     *  exceed the specified value. If min-height is specified and is greater than
     * max-height, max-height is overridden.
     */
    maxHeight?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the maximum width for an element. It limits the width property to be larger
     * than the value specified in max-width.
     */
    maxWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the minimum height for an element. It prevents the height of the element to
     * be smaller than the specified value. The value of min-height overrides both
     * max-height and height.
     */
    minHeight?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Sets the minimum width of an element. It limits the width property to be not
     * smaller than the value specified in min-width.
     */
    minWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The mix-blend-mode CSS property describes how an element's content should blend
     * with the content of the element's direct parent and the element's background.
     */
    mixBlendMode?: ICSSRule | IMixBlendModes | string;
    /**
     * The ‘object-fit’ property specifies how the contents of a replaced element should
     * be fitted to the box established by its used height and width.
     * See CSS 3 object-fit property https://www.w3.org/TR/css3-images/#the-object-fit
     */
    objectFit?: ICSSRule | 'cover' | 'contain' | 'fill' | 'none' | string;
    /**
     * Specifies the transparency of an element.
     * See CSS 3 opacity property https://drafts.csswg.org/css-color-3/#opacity
     */
    opacity?: ICSSRule | number | string;
    /**
     * Specifies the order used to lay out flex items in their flex container.
     * Elements are laid out in the ascending order of the order value.
     * See CSS order property https://drafts.csswg.org/css-flexbox-1/#order-property
     */
    order?: ICSSRule | number | string;
    /**
     * In paged media, this property defines the minimum number of lines in
     * a block container that must be left at the bottom of the page.
     * See CSS 3 orphans, widows properties https://drafts.csswg.org/css-break-3/#widows-orphans
     */
    orphans?: ICSSRule | number | string;
    /**
     * The CSS outline property is a shorthand property for setting one or more of the
     * individual outline properties outline-style, outline-width and outline-color in a
     * single rule. In most cases the use of this shortcut is preferable and more
     * convenient.
     * Outlines differ from borders in the following ways:
     *      •       Outlines do not take up space, they are drawn above the content.
     *      •       Outlines may be non-rectangular. They are rectangular in
     * Gecko/Firefox. Internet Explorer attempts to place the smallest contiguous outline
     * around all elements or shapes that are indicated to have an outline. Opera draws a
     * non-rectangular shape around a construct.
     */
    outline?: ICSSRule | 0 | string;
    /**
     * The outline-color property sets the color of the outline of an element. An
     * outline is a line that is drawn around elements, outside the border edge, to make
     * the element stand out.
     */
    outlineColor?: ICSSRule | string;
    /**
     * The outline-offset property offsets the outline and draw it beyond the border edge.
     */
    outlineOffset?: ICSSRule | string;
    /**
     * The overflow property controls how extra content exceeding the bounding box of an
     * element is rendered. It can be used in conjunction with an element that has a
     * fixed width and height, to eliminate text-induced page distortion.
     */
    overflow?: ICSSRule | 'auto' | 'hidden' | 'scroll' | 'visible';
    /**
     * Specifies the preferred scrolling methods for elements that overflow.
     */
    overflowStyle?: ICSSRule | string;
    /**
     * Specifies whether or not the browser should insert line breaks within words to
     * prevent text from overflowing its content box. In contrast to word-break,
     * overflow-wrap will only create a break if an entire word cannot be placed on its
     * own line without overflowing.
     */
    overflowWrap?: ICSSRule | 'normal' | 'break-word' | string;
    /**
     * Controls how extra content exceeding the x-axis of the bounding box of an element
     * is rendered.
     */
    overflowX?: ICSSRule | 'auto' | 'hidden' | 'scroll' | 'visible' | string;
    /**
     * Controls how extra content exceeding the y-axis of the bounding box of an element
     * is rendered.
     */
    overflowY?: ICSSRule | 'auto' | 'hidden' | 'scroll' | 'visible' | string;
    /**
     * The padding optional CSS property sets the required padding space on one to four
     * sides of an element. The padding area is the space between an element and its
     * border. Negative values are not allowed but decimal values are permitted. The
     *  element size is treated as fixed, and the content of the element shifts toward the
     * center as padding is increased. The padding property is a shorthand to avoid
     * setting each side separately (padding-top, padding-right, padding-bottom,
     * padding-left).
     */
    padding?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-block-end CSS property defines the logical block end padding
     * of an element, which maps to a physical padding depending on the element's
     * writing mode, directionality, and text orientation. It corresponds to the
     * padding-top, padding-right, padding-bottom, or padding-left property
     * depending on the values defined for writing-mode, direction, and text-orientation.
     */
    paddingBlockEnd?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-block-start CSS property defines the logical block start padding
     * of an element, which maps to a physical padding depending on the element's
     * writing mode, directionality, and text orientation. It corresponds to the
     * padding-top, padding-right, padding-bottom, or padding-left property depending
     * on the values defined for writing-mode, direction, and text-orientation.
     */
    paddingBlockStart?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-left CSS property of an element sets the padding space required on the
     * left side of an element. The padding area is the space between the content of the
     * element and its border. Contrary to margin-left values, negative values of
     * padding-left are invalid.
     */
    paddingLeft?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-bottom CSS property of an element sets the padding space required on
     * the bottom of an element. The padding area is the space between the content of the
     * element and its border. Contrary to margin-bottom values, negative values of
     * padding-bottom are invalid.
     */
    paddingBottom?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-inline-end CSS property defines the logical inline end padding of an element,
     * which maps to a physical padding depending on the element's writing mode, directionality,
     * and text orientation. It corresponds to the padding-top, padding-right, padding-bottom,
     * or padding-left property depending on the values defined for writing-mode, direction,
     * and text-orientation.
     */
    paddingInlineEnd?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-inline-start CSS property defines the logical inline start padding of
     * an element, which maps to a physical padding depending on the element's writing mode,
     * directionality, and text orientation. It corresponds to the padding-top, padding-right,
     * padding-bottom, or padding-left property depending on the values defined for writing-mode,
     * direction, and text-orientation.
     */
    paddingInlineStart?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-right CSS property of an element sets the padding space required on the
     * right side of an element. The padding area is the space between the content of the
     * element and its border. Contrary to margin-right values, negative values of
     * padding-right are invalid.
     */
    paddingRight?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The padding-top CSS property of an element sets the padding space required on the
     * top of an element. The padding area is the space between the content of the element
     * and its border. Contrary to margin-top values, negative values of padding-top are
     * invalid.
     */
    paddingTop?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The page-break-after property is supported in all major browsers. With CSS3,
     *  page-break-* properties are only aliases of the break-* properties. The CSS3
     * Fragmentation spec defines breaks for all CSS box fragmentation.
     */
    pageBreakAfter?: ICSSRule | string;
    /**
     * The page-break-before property sets the page-breaking behavior before an element.
     * With CSS3, page-break-* properties are only aliases of the break-* properties. The
     * CSS3 Fragmentation spec defines breaks for all CSS box fragmentation.
     */
    pageBreakBefore?: ICSSRule | string;
    /**
     * Sets the page-breaking behavior inside an element. With CSS3, page-break-*
     * properties are only aliases of the break-* properties. The CSS3 Fragmentation spec
     * defines breaks for all CSS box fragmentation.
     */
    pageBreakInside?: ICSSRule | string;
    /**
     * The pause property determines how long a speech media agent should pause before and
     * after presenting an element. It is a shorthand for the pause-before and pause-after
     *  properties.
     */
    pause?: ICSSRule | string;
    /**
     * The pause-after property determines how long a speech media agent should pause after
     * presenting an element. It may be replaced by the shorthand property pause, which
     * sets pause time before and after.
     */
    pauseAfter?: ICSSRule | string;
    /**
     * The pause-before property determines how long a speech media agent should pause
     * before presenting an element. It may be replaced by the shorthand property pause,
     * which sets pause time before and after.
     */
    pauseBefore?: ICSSRule | string;
    /**
     * The perspective property defines how far an element is placed from the view on the
     * z-axis, from the screen to the viewer. Perspective defines how an object is viewed.
     * In graphic arts, perspective is the representation on a flat surface of what the
     * viewer's eye would see in a 3D space. (See Wikipedia for more information about
     * graphical perspective and for related illustrations.)
     * The illusion of perspective on a flat surface, such as a computer screen, is created
     * by projecting points on the flat surface as they would appear if the flat surface
     * were a window through which the viewer was looking at the object. In discussion of
     * virtual environments, this flat surface is called a projection plane.
     */
    perspective?: ICSSRule | string;
    /**
     * The perspective-origin property establishes the origin for the perspective property.
     * It effectively sets the X and Y position at which the viewer appears to be looking
     * at the children of the element.
     * When used with perspective, perspective-origin changes the appearance of an object,
     * as if a viewer were looking at it from a different origin. An object appears
     * differently if a viewer is looking directly at it versus looking at it from below,
     * above, or from the side. Thus, the perspective-origin is like a vanishing point.
     * The default value of perspective-origin is 50% 50%. This displays an object as if
     * the viewer's eye were positioned directly at the center of the screen, both
     * top-to-bottom and left-to-right. A value of 0% 0% changes the object as if the
     * viewer was looking toward the top left angle. A value of 100% 100% changes the
     * appearance as if viewed toward the bottom right angle.
     */
    perspectiveOrigin?: ICSSRule | string;
    /**
     * The pointer-events property allows you to control whether an element can be the
     * target for the pointing device (e.g, mouse, pen) events.
     */
    pointerEvents?: ICSSRule | string;
    /**
     * The position property controls the type of positioning used by an element within
     * its parent elements. The effect of the position property depends on a lot of
     * factors, for example the position property of parent elements.
     */
    position?: ICSSRule | 'static' | 'relative' | 'absolute' | 'fixed' | 'sticky';
    /**
     * Sets the type of quotation marks for embedded quotations.
     */
    quotes?: ICSSRule | string;
    /**
     * Controls whether the last region in a chain displays additional 'overset' content
     * according its default overflow property, or if it displays a fragment of content
     * as if it were flowing into a subsequent region.
     */
    regionFragment?: ICSSRule | string;
    /**
     * The resize CSS sets whether an element is resizable, and if so, in which direction(s).
     */
    resize?: ICSSRule | 'none' | 'both' | 'horizontal' | 'vertical' | 'block' | 'inline' | string;
    /**
     * The rest-after property determines how long a speech media agent should pause after
     * presenting an element's main content, before presenting that element's exit cue
     * sound. It may be replaced by the shorthand property rest, which sets rest time
     * before and after.
     */
    restAfter?: ICSSRule | string;
    /**
     * The rest-before property determines how long a speech media agent should pause after
     * presenting an intro cue sound for an element, before presenting that element's main
     * content. It may be replaced by the shorthand property rest, which sets rest time
     * before and after.
     */
    restBefore?: ICSSRule | string;
    /**
     * Specifies the position an element in relation to the right side of the containing
     * element.
     */
    right?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Defines the alpha channel threshold used to extract a shape from an image. Can be
     * thought of as a "minimum opacity" threshold; that is, a value of 0.5 means that the
     * shape will enclose all the pixels that are more than 50% opaque.
     */
    shapeImageThreshold?: ICSSRule | string;
    /**
     * A future level of CSS Shapes will define a shape-inside property, which will define
     * a shape to wrap content within the element. See Editor's Draft
     * http://dev.w3.org/csswg/css-shapes and CSSWG wiki page on next-level plans
     * http://wiki.csswg.org/spec/css-shapes
     */
    shapeInside?: ICSSRule | string;
    /**
     * Adds a margin to a shape-outside. In effect, defines a new shape that is the
     * smallest contour around all the points that are the shape-margin distance outward
     * perpendicular to each point on the underlying shape. For points where a
     * perpendicular direction is not defined (e.g., a triangle corner), takes all
     * points on a circle centered at the point and with a radius of the shape-margin
     * distance. This property accepts only non-negative values.
     */
    shapeMargin?: ICSSRule | string;
    /**
     * Declares a shape around which text should be wrapped, with possible modifications
     * from the shape-margin property. The shape defined by shape-outside and shape-margin
     * changes the geometry of a float element's float area.
     */
    shapeOutside?: ICSSRule | string;
    /**
     * The speak property determines whether or not a speech synthesizer will read aloud
     * the contents of an element.
     */
    speak?: ICSSRule | string;
    /**
     * The speak-as property determines how the speech synthesizer interprets the content:
     * words as whole words or as a sequence of letters, numbers as a numerical value or a
     * sequence of digits, punctuation as pauses in speech or named punctuation characters.
     */
    speakAs?: ICSSRule | string;
    /**
     * The stroke property in CSS is for adding a border to SVG shapes.
     * See SVG 1.1 https://www.w3.org/TR/SVG/painting.html#Stroke
     */
    stroke?: ICSSRule | string;
    /**
     * SVG: The stroke-linecap attribute defines the shape to be used at the end of open subpaths when they are stroked.
     * See SVG 1.1 https://www.w3.org/TR/SVG/painting.html#LineCaps
     */
    strokeLinecap?: ICSSRule | 'butt' | 'round' | 'square' | string;
    /**
     * SVG: Specifies the opacity of the outline on the current object.
     * See SVG 1.1 https://www.w3.org/TR/SVG/painting.html#StrokeOpacityProperty
     */
    strokeOpacity?: ICSSRule | number | string;
    /**
     * SVG: Specifies the width of the outline on the current object.
     * See SVG 1.1 https://www.w3.org/TR/SVG/painting.html#StrokeWidthProperty
     */
    strokeWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The tab-size CSS property is used to customise the width of a tab (U+0009) character.
     */
    tabSize?: ICSSRule | string;
    /**
     * The 'table-layout' property controls the algorithm used to lay out the table cells, rows, and columns.
     */
    tableLayout?: ICSSRule | string;
    /**
     * The text-align CSS property describes how inline content like text is aligned in its
     * parent block element. text-align does not control the alignment of block elements
     * itself, only their inline content.
     */
    textAlign?: ICSSRule | string;
    /**
     * The text-align-last CSS property describes how the last line of a block element or
     * a line before line break is aligned in its parent block element.
     */
    textAlignLast?: ICSSRule | string;
    /**
     * The text-decoration CSS property is used to set the text formatting to underline,
     * overline, line-through or blink. underline and overline decorations are positioned
     * under the text, line-through over it.
     */
    textDecoration?: ICSSRule | string;
    /**
     * Sets the color of any text decoration, such as underlines, overlines, and strike
     * throughs.
     */
    textDecorationColor?: ICSSRule | string;
    /**
     * Sets what kind of line decorations are added to an element, such as underlines,
     * overlines, etc.
     */
    textDecorationLine?: ICSSRule | string;
    /**
     * Specifies what parts of an element’s content are skipped over when applying any
     * text decoration.
     */
    textDecorationSkip?: ICSSRule | string;
    /**
     * This property specifies the style of the text decoration line drawn on the
     * specified element. The intended meaning for the values are the same as those of
     * the border-style-properties.
     */
    textDecorationStyle?: ICSSRule | string;
    /**
     * The text-emphasis property will apply special emphasis marks to the elements text.
     * Slightly similar to the text-decoration property only that this property can have
     * affect on the line-height. It also is noted that this is shorthand for
     * text-emphasis-style and for text-emphasis-color.
     */
    textEmphasis?: ICSSRule | string;
    /**
     * The text-emphasis-color property specifies the foreground color of the emphasis
     * marks.
     */
    textEmphasisColor?: ICSSRule | string;
    /**
     * The text-emphasis-style property applies special emphasis marks to an element's
     * text.
     */
    textEmphasisStyle?: ICSSRule | string;
    /**
     * This property helps determine an inline box's block-progression dimension, derived
     * from the text-height and font-size properties for non-replaced elements, the height
     * or the width for replaced elements, and the stacked block-progression dimension for
     * inline-block elements. The block-progression dimension determines the position of
     * the padding, border and margin for the element.
     */
    textHeight?: ICSSRule | string;
    /**
     * Specifies the amount of space horizontally that should be left on the first line of
     * the text of an element. This horizontal spacing is at the beginning of the first
     * line and is in respect to the left edge of the containing block box.
     */
    textIndent?: ICSSRule | string;
    /**
     * The text-overflow shorthand CSS property determines how overflowed content that is
     * not displayed is signaled to the users. It can be clipped, display an ellipsis
     * ('…', U+2026 HORIZONTAL ELLIPSIS) or a Web author-defined string. It covers the
     * two long-hand properties text-overflow-mode and text-overflow-ellipsis
     */
    textOverflow?: ICSSRule | string;
    /**
     * The text-overline property is the shorthand for the text-overline-style,
     * text-overline-width, text-overline-color, and text-overline-mode properties.
     */
    textOverline?: ICSSRule | string;
    /**
     * Specifies the line color for the overline text decoration.
     */
    textOverlineColor?: ICSSRule | string;
    /**
     * Sets the mode for the overline text decoration, determining whether the text
     * decoration affects the space characters or not.
     */
    textOverlineMode?: ICSSRule | string;
    /**
     * Specifies the line style for overline text decoration.
     */
    textOverlineStyle?: ICSSRule | string;
    /**
     * Specifies the line width for the overline text decoration.
     */
    textOverlineWidth?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The text-rendering CSS property provides information to the browser about how to
     * optimize when rendering text. Options are: legibility, speed or geometric precision.
     */
    textRendering?: ICSSRule | string;
    /**
     * The CSS text-shadow property applies one or more drop shadows to the text and
     * `<text-decorations>` of an element. Each shadow is specified as an offset from the
     * text, along with optional color and blur radius values.
     */
    textShadow?: ICSSRule | string;
    /**
     * The text-size-adjust CSS property controls the text inflation algorithm used
     * on some smartphones and tablets. Other browsers will ignore this property.
     */
    textSizeAdjust?: 'none' | 'auto' | ICSSPercentageRule | ICSSRule;
    /**
     * This property transforms text for styling purposes. (It has no effect on the
     * underlying content.)
     */
    textTransform?: ICSSRule | string;
    /**
     * Unsupported.
     * This property will add a underline position value to the element that has an
     * underline defined.
     */
    textUnderlinePosition?: ICSSRule | string;
    /**
     * After review this should be replaced by text-decoration should it not?
     * This property will set the underline style for text with a line value for
     * underline, overline, and line-through.
     */
    textUnderlineStyle?: ICSSRule | string;
    /**
     * This property specifies how far an absolutely positioned box's top margin edge is
     * offset below the top edge of the box's containing block. For relatively positioned
     * boxes, the offset is with respect to the top edges of the box itself (i.e., the box
     * is given a position in the normal flow, then offset from that position according to
     * these properties).
     */
    top?: ICSSRule | ICSSPixelUnitRule;
    /**
     * Determines whether touch input may trigger default behavior supplied by the user
     * agent, such as panning or zooming.
     */
    touchAction?: ICSSRule | string;
    /**
     * CSS transforms allow elements styled with CSS to be transformed in two-dimensional
     * or three-dimensional space. Using this property, elements can be translated,
     * rotated, scaled, and skewed. The value list may consist of 2D and/or 3D transform
     * values.
     */
    transform?: ICSSRule | string;
    /**
     * This property defines the origin of the transformation axes relative to the element
     * to which the transformation is applied.
     */
    transformOrigin?: ICSSRule | string;
    /**
     * This property allows you to define the relative position of the origin of the
     * transformation grid along the z-axis.
     */
    transformOriginZ?: ICSSRule | string;
    /**
     * This property specifies how nested elements are rendered in 3D space relative to their parent.
     */
    transformStyle?: ICSSRule | string;
    /**
     * The transition CSS property is a shorthand property for transition-property,
     * transition-duration, transition-timing-function, and transition-delay. It allows to
     * define the transition between two states of an element.
     */
    transition?: ICSSRule | string;
    /**
     * Defines when the transition will start. A value of ‘0s’ means the transition will
     * execute as soon as the property is changed. Otherwise, the value specifies an
     * offset from the moment the property is changed, and the transition will delay
     * execution by that offset.
     */
    transitionDelay?: ICSSRule | string;
    /**
     * The 'transition-duration' property specifies the length of time a transition
     * animation takes to complete.
     */
    transitionDuration?: ICSSRule | string;
    /**
     * The 'transition-property' property specifies the name of the CSS property to which
     * the transition is applied.
     */
    transitionProperty?: ICSSRule | string;
    /**
     * Sets the pace of action within a transition
     */
    transitionTimingFunction?: ICSSRule | string;
    /**
     * The unicode-bidi CSS property specifies the level of embedding with respect to the bidirectional algorithm.
     */
    unicodeBidi?: ICSSRule | string;
    /**
     * This is for all the high level UX stuff.
     */
    userFocus?: ICSSRule | string;
    /**
     * For inputting user content
     */
    userInput?: ICSSRule | string;
    /**
     * Defines the text selection behavior.
     */
    userSelect?: ICSSRule | 'none' | 'auto' | 'text' | 'all' | 'contain' | string;
    /**
     * The vertical-align property controls how inline elements or text are vertically
     * aligned compared to the baseline. If this property is used on table-cells it
     * controls the vertical alignment of content of the table cell.
     */
    verticalAlign?: ICSSRule | string;
    /**
     * The visibility property specifies whether the boxes generated by an element are rendered.
     */
    visibility?: ICSSRule | string;
    /**
     * The voice-balance property sets the apparent position (in stereo sound) of the synthesized voice for spoken media.
     */
    voiceBalance?: ICSSRule | string;
    /**
     * The voice-duration property allows the author to explicitly set the amount of time
     * it should take a speech synthesizer to read an element's content, for example to
     * allow the speech to be synchronized with other media. With a value of auto (the
     * default) the length of time it takes to read the content is determined by the
     * content itself and the voice-rate property.
     */
    voiceDuration?: ICSSRule | string;
    /**
     * The voice-family property sets the speaker's voice used by a speech media agent to
     * read an element. The speaker may be specified as a named character (to match a
     * voice option in the speech reading software) or as a generic description of the
     * age and gender of the voice. Similar to the font-family property for visual media,
     * a comma-separated list of fallback options may be given in case the speech reader
     * does not recognize the character name or cannot synthesize the requested combination
     * of generic properties.
     */
    voiceFamily?: ICSSRule | string;
    /**
     * The voice-pitch property sets pitch or tone (high or low) for the synthesized speech
     * when reading an element; the pitch may be specified absolutely or relative to the
     * normal pitch for the voice-family used to read the text.
     */
    voicePitch?: ICSSRule | string;
    /**
     * The voice-range property determines how much variation in pitch or tone will be
     * created by the speech synthesize when reading an element. Emphasized text,
     * grammatical structures and punctuation may all be rendered as changes in pitch,
     * this property determines how strong or obvious those changes are; large ranges are
     * associated with enthusiastic or emotional speech, while small ranges are associated
     * with flat or mechanical speech.
     */
    voiceRange?: ICSSRule | string;
    /**
     * The voice-rate property sets the speed at which the voice synthesized by a speech
     * media agent will read content.
     */
    voiceRate?: ICSSRule | string;
    /**
     * The voice-stress property sets the level of vocal emphasis to be used for
     * synthesized speech reading the element.
     */
    voiceStress?: ICSSRule | string;
    /**
     * The voice-volume property sets the volume for spoken content in speech media. It
     * replaces the deprecated volume property.
     */
    voiceVolume?: ICSSRule | string;
    /**
     * The white-space property controls whether and how white space inside the element is
     * collapsed, and whether lines may wrap at unforced "soft wrap" opportunities.
     */
    whiteSpace?: ICSSRule | string;
    /**
     * In paged media, this property defines the mimimum number of lines that must be left
     * at the top of the second page.
     * See CSS 3 orphans, widows properties
     * https://drafts.csswg.org/css-break-3/#widows-orphans
     */
    widows?: ICSSRule | number | string;
    /**
     * Specifies the width of the content area of an element. The content area of the element
     * width does not include the padding, border, and margin of the element.
     */
    width?: ICSSRule | ICSSPixelUnitRule;
    /**
     * The word-break property is often used when there is long generated content that is
     * strung together without and spaces or hyphens to beak apart. A common case of this
     * is when there is a long URL that does not have any hyphens. This case could
     * potentially cause the breaking of the layout as it could extend past the parent
     * element.
     */
    wordBreak?: ICSSRule | string;
    /**
     * The word-spacing CSS property specifies the spacing behavior between "words".
     */
    wordSpacing?: ICSSRule | string;
    /**
     * An alias of css/properties/overflow-wrap, word-wrap defines whether to break
     * words when the content exceeds the boundaries of its container.
     */
    wordWrap?: ICSSRule | string;
    /**
     * Specifies how exclusions affect inline content within block-level elements. Elements
     * lay out their inline content in their content area but wrap around exclusion areas.
     */
    wrapFlow?: ICSSRule | string;
    /**
     * Set the value that is used to offset the inner wrap shape from other shapes. Inline
     * content that intersects a shape with this property will be pushed by this shape's
     * margin.
     */
    wrapMargin?: ICSSRule | string;
    /**
     * writing-mode specifies if lines of text are laid out horizontally or vertically,
     * and the direction which lines of text and blocks progress.
     */
    writingMode?: ICSSRule | string;
    /**
     * The z-index property specifies the z-order of an element and its descendants.
     * When elements overlap, z-order determines which one covers the other.
     * See CSS 2 z-index property https://www.w3.org/TR/CSS2/visuren.html#z-index
     */
    zIndex?: ICSSRule | 'auto' | number | string;
    /**
     * Sets the initial zoom factor of a document defined by `@viewport`.
     * See CSS zoom descriptor https://drafts.csswg.org/css-device-adapt/#zoom-desc
     */
    zoom?: ICSSRule | 'auto' | number | ICSSPercentageRule;
}

/**
 * IStyleObject extends a raw style objects, but allows selectors to be defined
 * under the selectors node.
 * @public
 * {@docCategory IStyle}
 */
export declare type IStyle = IStyleBase | IStyleBaseArray;

/**
 * {@docCategory IStyleBase}
 */
export declare type IStyleBase = IRawStyle | string | false | null | undefined;

/**
 * {@docCategory IStyleBaseArray}
 */
export declare interface IStyleBaseArray extends Array<IStyle> {
}

/**
 * A style function takes in styleprops and returns a partial styleset.
 * {@docCategory IStyleFunction}
 */
export declare type IStyleFunction<TStylesProps, TStyleSet extends IStyleSet<TStyleSet>> = (props: TStylesProps) => DeepPartial<TStyleSet>;

/**
 * Represents either a style function that takes in style props and returns a partial styleset,
 * or a partial styleset object.
 * {@docCategory IStyleFunctionOrObject}
 */
export declare type IStyleFunctionOrObject<TStylesProps, TStyleSet extends IStyleSet<TStyleSet>> = IStyleFunction<TStylesProps, TStyleSet> | DeepPartial<TStyleSet>;

declare interface IStyleOptions {
    rtl?: boolean;
    specificityMultiplier?: number;
}

/**
 * A style set is a dictionary of display areas to IStyle objects.
 * It may optionally contain style functions for sub components in the special `subComponentStyles`
 * property.
 */
export declare type IStyleSet<TStyleSet extends IStyleSet<TStyleSet> = {
    [key: string]: any;
}> = {
    [P in keyof Omit<TStyleSet, 'subComponentStyles'>]: IStyle;
} & {
    subComponentStyles?: {
        [P in keyof TStyleSet['subComponentStyles']]: IStyleFunctionOrObject<any, any>;
    };
};

/**
 * Stylesheet config.
 *
 * @public
 */
export declare interface IStyleSheetConfig {
    /**
     * Injection mode for how rules are inserted.
     */
    injectionMode?: InjectionMode;
    /**
     * Default 'displayName' to use for a className.
     * @defaultvalue 'css'
     */
    defaultPrefix?: string;
    /**
     * Defines the default direction of rules for auto-rtlifying things.
     * While typically this is represented as a DIR attribute in the markup,
     * the DIR is not enough to control whether padding goes on the left or
     * right. Use this to set the default direction when rules are registered.
     */
    rtl?: boolean;
    /**
     * Default 'namespace' to attach before the className.
     */
    namespace?: string;
    /**
     * CSP settings
     */
    cspSettings?: ICSPSettings;
    /**
     * Callback executed when a rule is inserted.
     */
    onInsertRule?: (rule: string) => void;
    /**
     * Initial value for classnames cache. Key is serialized css rules associated with a classname.
     */
    classNameCache?: {
        [key: string]: string;
    };
}

/**
 * Registers keyframe definitions.
 *
 * @public
 */
export declare function keyframes(timeline: IKeyframes): string;

/**
 * Concatenation helper, which can merge class names together. Skips over falsey values.
 * Accepts a set of options that will be used when calculating styles.
 *
 * @public
 */
export declare function mergeCss(args: (IStyle | IStyleBaseArray | false | null | undefined) | (IStyle | IStyleBaseArray | false | null | undefined)[], options?: IStyleOptions): string;

/**
 * Takes in one or more style set objects, each1consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeCss` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 * @param options - (optional) Options to use when creating rules.
 */
export declare function mergeCssSets<TStyleSet>(styleSets: [TStyleSet | false | null | undefined], options?: IStyleOptions): IProcessedStyleSet<TStyleSet>;

/**
 * Takes in one or more style set objects, each1consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeCss` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 * @param options - (optional) Options to use when creating rules.
 */
export declare function mergeCssSets<TStyleSet1, TStyleSet2>(styleSets: [TStyleSet1 | false | null | undefined, TStyleSet2 | false | null | undefined], options?: IStyleOptions): IProcessedStyleSet<TStyleSet1 & TStyleSet2>;

/**
 * Takes in one or more style set objects, each1consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeCss` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 * @param options - (optional) Options to use when creating rules.
 */
export declare function mergeCssSets<TStyleSet1, TStyleSet2, TStyleSet3>(styleSets: [TStyleSet1 | false | null | undefined, TStyleSet2 | false | null | undefined, TStyleSet3 | false | null | undefined], options?: IStyleOptions): IProcessedStyleSet<TStyleSet1 & TStyleSet2 & TStyleSet3>;

/**
 * Takes in one or more style set objects, each1consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeCss` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 * @param options - (optional) Options to use when creating rules.
 */
export declare function mergeCssSets<TStyleSet1, TStyleSet2, TStyleSet3, TStyleSet4>(styleSets: [TStyleSet1 | false | null | undefined, TStyleSet2 | false | null | undefined, TStyleSet3 | false | null | undefined, TStyleSet4 | false | null | undefined], options?: IStyleOptions): IProcessedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3> & ObjectOnly<TStyleSet4>>;

/**
 * Takes in one or more style set objects, each1consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeCss` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 * @param options - (optional) Options to use when creating rules.
 */
export declare function mergeCssSets<TStyleSet>(styleSet: [TStyleSet | false | null | undefined], options?: IStyleOptions): IProcessedStyleSet<TStyleSet>;

/**
 * Concatenation helper, which can merge class names together. Skips over falsey values.
 *
 * @public
 */
export declare function mergeStyles(...args: (IStyle | IStyleBaseArray | false | null | undefined)[]): string;

/**
 * Takes in one or more style set objects, each consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeStyles` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSet - The first style set to be merged and reigstered.
 */
export declare function mergeStyleSets<TStyleSet>(styleSet: TStyleSet | false | null | undefined): IProcessedStyleSet<ObjectOnly<TStyleSet>>;

/**
 * Takes in one or more style set objects, each consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeStyles` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSet1 - The first style set to be merged.
 * @param styleSet2 - The second style set to be merged.
 */
export declare function mergeStyleSets<TStyleSet1, TStyleSet2>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined): IProcessedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2>>;

/**
 * Takes in one or more style set objects, each consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeStyles` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSet1 - The first style set to be merged.
 * @param styleSet2 - The second style set to be merged.
 * @param styleSet3 - The third style set to be merged.
 */
export declare function mergeStyleSets<TStyleSet1, TStyleSet2, TStyleSet3>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined): IProcessedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3>>;

/**
 * Takes in one or more style set objects, each consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeStyles` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSet1 - The first style set to be merged.
 * @param styleSet2 - The second style set to be merged.
 * @param styleSet3 - The third style set to be merged.
 * @param styleSet4 - The fourth style set to be merged.
 */
export declare function mergeStyleSets<TStyleSet1, TStyleSet2, TStyleSet3, TStyleSet4>(styleSet1: TStyleSet1 | false | null | undefined, styleSet2: TStyleSet2 | false | null | undefined, styleSet3: TStyleSet3 | false | null | undefined, styleSet4: TStyleSet4 | false | null | undefined): IProcessedStyleSet<ObjectOnly<TStyleSet1> & ObjectOnly<TStyleSet2> & ObjectOnly<TStyleSet3> & ObjectOnly<TStyleSet4>>;

/**
 * Takes in one or more style set objects, each consisting of a set of areas,
 * each which will produce a class name. Using this is analogous to calling
 * `mergeStyles` for each property in the object, but ensures we maintain the
 * set ordering when multiple style sets are merged.
 *
 * @param styleSets - One or more style sets to be merged.
 */
export declare function mergeStyleSets(...styleSets: Array<IStyleSet | undefined | false | null>): IProcessedStyleSet<any>;

export declare type ObjectOnly<TArg> = TArg extends {} ? TArg : {};

/**
 * {@docCategory Omit}
 */
export declare type Omit<U, K extends keyof U> = Pick<U, Diff<keyof U, K>>;

/**
 * Sets the current RTL value.
 */
export declare function setRTL(isRTL: boolean): void;

/**
 * Represents the state of styles registered in the page. Abstracts
 * the surface for adding styles to the stylesheet, exposes helpers
 * for reading the styles registered in server rendered scenarios.
 *
 * @public
 */
export declare class Stylesheet {
    private _lastStyleElement?;
    private _styleElement?;
    private _rules;
    private _preservedRules;
    private _config;
    private _rulesToInsert;
    private _counter;
    private _keyToClassName;
    private _onResetCallbacks;
    private _classNameToArgs;
    /**
     * Gets the singleton instance.
     */
    static getInstance(): Stylesheet;
    constructor(config?: IStyleSheetConfig);
    /**
     * Configures the stylesheet.
     */
    setConfig(config?: IStyleSheetConfig): void;
    /**
     * Configures a reset callback.
     *
     * @param callback - A callback which will be called when the Stylesheet is reset.
     */
    onReset(callback: () => void): void;
    /**
     * Generates a unique classname.
     *
     * @param displayName - Optional value to use as a prefix.
     */
    getClassName(displayName?: string): string;
    /**
     * Used internally to cache information about a class which was
     * registered with the stylesheet.
     */
    cacheClassName(className: string, key: string, args: IStyle[], rules: string[]): void;
    /**
     * Gets the appropriate classname given a key which was previously
     * registered using cacheClassName.
     */
    classNameFromKey(key: string): string | undefined;
    /**
     * Gets all classnames cache with the stylesheet.
     */
    getClassNameCache(): {
        [key: string]: string;
    };
    /**
     * Gets the arguments associated with a given classname which was
     * previously registered using cacheClassName.
     */
    argsFromClassName(className: string): IStyle[] | undefined;
    /**
     * Gets the arguments associated with a given classname which was
     * previously registered using cacheClassName.
     */
    insertedRulesFromClassName(className: string): string[] | undefined;
    /**
     * Inserts a css rule into the stylesheet.
     * @param preserve - Preserves the rule beyond a reset boundary.
     */
    insertRule(rule: string, preserve?: boolean): void;
    /**
     * Gets all rules registered with the stylesheet; only valid when
     * using InsertionMode.none.
     */
    getRules(includePreservedRules?: boolean): string;
    /**
     * Resets the internal state of the stylesheet. Only used in server
     * rendered scenarios where we're using InsertionMode.none.
     */
    reset(): void;
    resetKeys(): void;
    private _getStyleElement;
    private _createStyleElement;
    private _findPlaceholderStyleTag;
}

export { }