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# declaration-block-semicolon-space-before
Require a single space or disallow whitespace before the semicolons of declaration blocks.
```css
a { color: pink; }
/** ↑
* The space before this semicolon */
```
## Options
`string`: `"always"|"never"|"always-single-line"|"never-single-line"`
### `"always"`
There *must always* be a single space before the semicolons.
The following patterns are considered warnings:
```css
a { color: pink; }
```
```css
a { color: pink; top: 0; }
```
The following patterns are *not* considered warnings:
```css
a { color: pink ; }
```
```css
a { color: pink ; top: 0 ; }
```
### `"never"`
There *must never* be whitespace before the semicolons.
The following patterns are considered warnings:
```css
a { color: pink ; }
```
```css
a { color: pink ; top: 0 ; }
```
The following patterns are *not* considered warnings:
```css
a { color: pink; }
```
```css
a { color: pink; top: 0; }
```
### `"always-single-line"`
There *must always* be a single space before the semicolons in single-line declaration blocks.
The following patterns are considered warnings:
```css
a { color: pink; }
```
The following patterns are *not* considered warnings:
```css
a { color: pink ; }
```
```css
a { color: pink; top: 0; }
```
```css
a { color: pink ; top: 0 ; }
```
### `"never-single-line"`
There *must never* be whitespace before the semicolons in single-line declaration blocks.
The following patterns are considered warnings:
```css
a { color: pink ; }
```
The following patterns are *not* considered warnings:
```css
a { color: pink; }
```
```css
a { color: pink; top: 0; }
```
```css
a { color: pink ; top: 0 ; }
```