export const PageHeader: import("styled-components").StyledComponent<"h1", import("styled-components").DefaultTheme, {
    as: "h1" | "h2" | "h3" | "h4" | "h5";
    size: "md" | "xs" | "sm" | "lg" | "xl";
} & {
    size?: "md" | "xs" | "sm" | "lg" | "xl" | undefined;
} & {
    size: string;
}, "size" | "as">;