UI pseudo-classes - Learn web development
ting, but as yet not well-supported in browsers: the :blank pseudo-class selects empty form controls.
...nable browser support; the :blank pseudo-class's specification is not yet finished, so it not yet supported in any browser.
...y browser.
...ser experience.

:-moz-ui-invalid - CSS: Cascading Style Sheets
lue becomes valid.
...at creates a red "glow" (using the box-shadow property) around items, which have this pseudo-class applied.
...ound items, which have this pseudo-class applied.

Pseudo-classes - CSS: Cascading Style Sheets
erminate :in-range :invalid :is() :lang() :last-child :last-of-type :left :link :local-link :not() :nth-child() :nth-col() :nth-last-child() :nth-last-col() :nth-last-of-type() :nth-of-type() :only-child :only-of-type :optional :out-of-range :past :placeholder-shown :read-only :read-write :required :right :root :scope :state() :target :target-within :user-invalid :valid :visited :where() specifications specification status comment fullscreen api living standard defined :fullscreen.
...:where() specifications specification status comment fullscreen api living standard defined :fullscreen.

<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
ed attribute set on it.