+++ /dev/null
-# selector-pseudo-element-no-unknown
-
-Disallow unknown pseudo-element selectors.
-
-```css
- a::before {}
-/** ↑
- * This pseudo-element selector */
-```
-
-This rule considers pseudo-element selectors defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
-
-All vendor-prefixed pseudo-element selectors are ignored.
-
-## Options
-
-### `true`
-
-The following patterns are considered violations:
-
-```css
-a::pseudo {}
-```
-
-```css
-a::PSEUDO {}
-```
-
-```css
-a::element {}
-```
-
-The following patterns are *not* considered violations:
-
-```css
-a:before {}
-```
-
-```css
-a::before {}
-```
-
-```css
-::selection {}
-```
-
-```css
-input::-moz-placeholder {}
-```
-
-## Optional secondary options
-
-### `ignorePseudoElements: ["/regex/", "string"]`
-
-Given:
-
-```js
-["/^my-/", "pseudo-element"]
-```
-
-The following patterns are *not* considered violations:
-
-```css
-a::pseudo-element {}
-```
-
-```css
-a::my-pseudo {}
-```
-
-```css
-a::my-other-pseudo {}
-```