:root
Quick Summary for :root
The :root CSS pseudo-class matches the root element of a tree representing the document. In HTML, :root represents the <html> element and is identical to the selector html, except that its specificity is higher.
Code Usage for :root
/* Selects the root element of the document:    <html> in the case of HTML */ :root {   background: yellow; }
More Details for :root

:root

The :root CSS pseudo-class matches the root element of a tree representing the document. In HTML, :root represents the <html> element and is identical to the selector html, except that its specificity is higher.

/* Selects the root element of the document:    <html> in the case of HTML */ :root {   background: yellow; }

Syntax

:root

Examples

Declaring global CSS variables

:root can be useful for declaring global CSS variables:

:root {   --main-color: hotpink;   --pane-padding: 5px 42px; }

Specifications

Specification
Selectors Level 4 # root-pseudo

See also

<html> Document.rootElement Node.getRootNode() Element.shadowRoot ShadowRoot

Last modified: Aug 12, 2021, by MDN contributors

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The :current CSS pseudo-class selector is a time-dimensional pseudo-class that represents the element, or an ancestor of the element, that is currently being displayed. For example in a video with captions which are being displayed by WebVTT.
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