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- # selector-pseudo-class-no-unknown
-
- Disallow unknown pseudo-class selectors.
-
- <!-- prettier-ignore -->
- ```css
- a:hover {}
- /** ↑
- * This pseudo-class selector */
- ```
-
- This rule considers pseudo-class selectors defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
-
- This rule ignores vendor-prefixed pseudo-class selectors.
-
- ## Options
-
- ### `true`
-
- The following patterns are considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:unknown {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:UNKNOWN {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:hoverr {}
- ```
-
- The following patterns are _not_ considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:hover {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:focus {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- :not(p) {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- input:-moz-placeholder {}
- ```
-
- ## Optional secondary options
-
- ### `ignorePseudoClasses: ["/regex/", "string"]`
-
- Given:
-
- ```
- ["/^my-/", "pseudo-class"]
- ```
-
- The following patterns are _not_ considered violations:
-
- <!-- prettier-ignore -->
- ```css
- a:pseudo-class {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:my-pseudo {}
- ```
-
- <!-- prettier-ignore -->
- ```css
- a:my-other-pseudo {}
- ```
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