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- # selector-pseudo-element-case
-
- Specify lowercase or uppercase for pseudo-element selectors.
-
- <!-- prettier-ignore -->
- ```css
- a::before {}
- /** ↑
- * This pseudo-element selector */
- ```
-
- The [`fix` option](../../../docs/user-guide/usage/options.md#fix) can automatically fix all of the problems reported by this rule.
-
- ## Options
-
- `string`: `"lower"|"upper"`
-
- ### `"lower"`
-
- The following patterns are considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:Before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:bEfOrE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:BEFORE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::Before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::bEfOrE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::BEFORE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- input::-MOZ-PLACEHOLDER {}
- ```
-
- The following patterns are _not_ considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- input::-moz-placeholder {}
- ```
-
- ### `"upper"`
-
- The following patterns are considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:Before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:bEfOrE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:BEFORE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::Before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::bEfOrE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::before {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- input::-moz-placeholder {}
- ```
-
- The following patterns are _not_ considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:BEFORE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a::BEFORE {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- input::-MOZ-PLACEHOLDER {}
- ```
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