#selector-pseudo-class-no-unknown

Disallow unknown pseudo-class selectors.

    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.

All vendor-prefixed pseudo-class selectors are ignored.

#Options

#true

The following patterns are considered violations:

a:unknown {}
a:UNKNOWN {}
a:hoverr {}

The following patterns are not considered violations:

a:hover {}
a:focus {}
:not(p) {}
input:-moz-placeholder {}

#Optional secondary options

#ignorePseudoClasses: ["/regex/", "string"]

Given:

["/^my-/", "pseudo-class"]

The following patterns are not considered violations:

a:pseudo-class {}
a:my-pseudo {}
a:my-other-pseudo {}