# block-opening-brace-space-after

Require a single space or disallow whitespace after the opening brace of blocks.

<!-- prettier-ignore -->
```css
  a { color: pink; }
/** ↑
 * The space after this brace */
```

The [`fix` option](https://stylelint.io/user-guide/options/#fix) can automatically fix all of the problems reported by this rule.

## Options

`string`: `"always"|"never"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line"`

### `"always"`

There _must always_ be a single space after the opening brace.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a {color: pink; }
```

<!-- prettier-ignore -->
```css
a {
color: pink; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a { color: pink; }
```

<!-- prettier-ignore -->
```css
a { color: pink;
}
```

### `"never"`

There _must never_ be whitespace after the opening brace.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a { color: pink; }
```

<!-- prettier-ignore -->
```css
a {
color: pink; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a {color: pink; }
```

<!-- prettier-ignore -->
```css
a
{color: pink; }
```

### `"always-single-line"`

There _must always_ be a single space after the opening brace in single-line blocks.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a {color: pink; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a { color: pink; }
```

<!-- prettier-ignore -->
```css
a {color: pink;
}
```

### `"never-single-line"`

There _must never_ be whitespace after the opening brace in single-line blocks.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a { color: pink; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a {color: pink; }
```

<!-- prettier-ignore -->
```css
a { color: pink;
}
```

### `"always-multi-line"`

There _must always_ be a single space after the opening brace in multi-line blocks.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a {color: pink;
}
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a {color: pink; }
```

<!-- prettier-ignore -->
```css
a { color: pink;
}
```

### `"never-multi-line"`

There _must never_ be whitespace after the opening brace in multi-line blocks.

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a { color: pink;
}
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a { color: pink; }
```

<!-- prettier-ignore -->
```css
a {color: pink;
}
```

## Optional secondary options

### `ignore: ["at-rules"]`

Ignore the opening brace of at-rules.

For example, with `"always"`:

The following pattern is _not_ considered a problem:

<!-- prettier-ignore -->
```css
@media print {
  a { color: pink; }
}
```