CSS Reference

CSS – :nth-last-of-type() Selector

The :nth-last-of-type() selector selects all elements that are the nth child of a specified type, of their parent, counting from the last child.

CSS Reference

CSS – :only-child Selector

The :only-child selector selects every element that is the only child of its parent. If the parent has multiple child elements, it will NOT be selected.

CSS Reference

CSS – :optional Selector

The :optional selector selects form elements which are optional (those without the required attribute).

CSS Reference

CSS – :out-of-range Selector

The :out-of-range selector selects elements with a value that is NOT within a specified range, and only works for input elements with min/max attributes.

CSS Reference

CSS – :read-only Selector

The :read-only selector selects form inputs which are “readonly” (those with a “readonly” attribute).

CSS Reference

CSS – :read-write Selector

The :read-write selector selects form inputs which are “readable” and “writeable” (those with no “readonly” or “disabled” attributes).

CSS Reference

CSS – :required Selector

The :required selector selects form inputs which are required (those with the required attribute).

CSS Reference

CSS – :root Selector

The :root selector matches the document’s root element, which is always the HTML element.

CSS Reference

CSS – ::selection Selector

The ::selection selector matches the portion of an element that is selected by a user, and is most often used to set the background color of selected text.

CSS Reference

CSS – :target Selector

The :target selector selects the current active target anchor element on the page (the element being linked to).

CSS Reference

CSS – :valid Selector

The :valid selector selects form inputs with a value that properly validates according to the element’s settings.

CSS Reference

CSS – accent-color Property

The accent-color property specifies the accent color for user controls and indicators such as input elements, and the progress element.

CSS Reference

CSS – all Property

The all property resets all the properties of an element, except for the unicode-bidi and direction, to its initial or inherited value.

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