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# selector-attribute-operator-space-before
Require a single space or disallow whitespace before operators within attribute selectors.
```css
.foo[target =_blank]
/** ↑
* The space before operator */
```
## Options
`string`: `"always"|"never"`
### `"always"`
There *must always* be a single space before the operator.
The following patterns are considered warnings:
```css
[target=_blank] {}
```
```css
[target= _blank] {}
```
```css
[target='_blank'] {}
```
```css
[target="_blank"] {}
```
```css
[target= '_blank'] {}
```
```css
[target= "_blank"] {}
```
The following patterns are *not* considered warnings:
```css
[target] {}
```
```css
[target =_blank] {}
```
```css
[target ='_blank'] {}
```
```css
[target ="_blank"] {}
```
```css
[target = _blank] {}
```
```css
[target = '_blank'] {}
```
```css
[target = "_blank"] {}
```
### `"never"`
There *must never* be a single before after the operator.
The following patterns are considered warnings:
```css
[target =_blank] {}
```
```css
[target = _blank] {}
```
```css
[target ='_blank'] {}
```
```css
[target ="_blank"] {}
```
```css
[target = '_blank'] {}
```
```css
[target = "_blank"] {}
```
The following patterns are *not* considered warnings:
```css
[target] {}
```
```css
[target=_blank] {}
```
```css
[target='_blank'] {}
```
```css
[target="_blank"] {}
```
```css
[target= _blank] {}
```
```css
[target= '_blank'] {}
```
```css
[target= "_blank"] {}
```