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A mighty, modern CSS linter.
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# block-opening-brace-space-before
Require a single space or disallow whitespace before the opening brace of blocks.
```css
a { color: pink; }
/** ↑
* The space before this brace */
```
The `--fix` option on the [command line](../../../docs/user-guide/cli.md#autofixing-errors) 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 before the opening brace.
The following patterns are considered violations:
```css
a{ color: pink; }
```
```css
a
{ color: pink; }
```
The following patterns are *not* considered violations:
```css
a { color: pink; }
```
```css
a {
color: pink; }
```
### `"never"`
There *must never* be whitespace before the opening brace.
The following patterns are considered violations:
```css
a { color: pink; }
```
```css
a
{ color: pink; }
```
The following patterns are *not* considered violations:
```css
a{ color: pink; }
```
```css
a{
color: pink; }
```
### `"always-single-line"`
There *must always* be a single space before the opening brace in single-line blocks.
The following patterns are considered violations:
```css
a{ color: pink; }
```
The following patterns are *not* considered violations:
```css
a { color: pink; }
```
```css
a{
color: pink; }
```
### `"never-single-line"`
There *must never* be whitespace before the opening brace in single-line blocks.
The following patterns are considered violations:
```css
a { color: pink; }
```
The following patterns are *not* considered violations:
```css
a{ color: pink; }
```
```css
a {
color: pink; }
```
### `"always-multi-line"`
There *must always* be a single space before the opening brace in multi-line blocks.
The following patterns are considered violations:
```css
a{
color: pink; }
```
The following patterns are *not* considered violations:
```css
a{ color: pink; }
```
```css
a {
color: pink; }
```
### `"never-multi-line"`
There *must never* be whitespace before the opening brace in multi-line blocks.
The following patterns are considered violations:
```css
a {
color: pink; }
```
The following patterns are *not* considered violations:
```css
a { color: pink; }
```
```css
a{
color: pink;}
```
## Optional secondary options
### `ignoreAtRules: ["/regex/", /regex/, "non-regex"]`
Given:
```js
["/fo/"]
```
The following patterns are *not* considered violations:
```css
@for ...
{}
```
```css
@for ...{}
```