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# selector-pseudo-class-parentheses-space-inside
Require a single space or disallow whitespace on the inside of the parentheses within pseudo-class selectors.
```css
input:not( [type="submit"] ) {}
/** ↑ ↑
* The space inside these two parentheses */
```
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"`
There *must always* be a single space inside the parentheses.
The following patterns are considered violations:
```css
input:not([type="submit"]) {}
```
```css
input:not([type="submit"] ) {}
```
The following patterns are *not* considered violations:
```css
input:not( [type="submit"] ) {}
```
### `"never"`
There *must never* be whitespace on the inside the parentheses.
The following patterns are considered violations:
```css
input:not( [type="submit"] ) {}
```
```css
input:not( [type="submit"]) {}
```
The following patterns are *not* considered violations:
```css
input:not([type="submit"]) {}
```