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# media-feature-colon-space-before
Require a single space or disallow whitespace before the colon in media features.
```css
@media (max-width :600px) {}
/** ↑
* The space before this colon */
```
The [`fix` option](../../../docs/user-guide/usage/options.md#fix) can automatically fix all of the problems reported by this rule.
## Options
`string`: `"always"|"never"`
### `"always"`
There *must always* be a single space before the colon.
The following patterns are considered violations:
```css
@media (max-width:600px) {}
```
```css
@media (max-width: 600px) {}
```
The following patterns are *not* considered violations:
```css
@media (max-width :600px) {}
```
```css
@media (max-width : 600px) {}
```
### `"never"`
There *must never* be whitespace before the colon.
The following patterns are considered violations:
```css
@media (max-width :600px) {}
```
```css
@media (max-width : 600px) {}
```
The following patterns are *not* considered violations:
```css
@media (max-width:600px) {}
```
```css
@media (max-width: 600px) {}
```