CSS :root Selector

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Example

Set the background color for the HTML document:

:root {
  background: #ff0000;
}
Try it Yourself »

Definition and Usage

The :root selector matches the document's root element.

In HTML, the root element is always the html element.

Version: CSS3

Browser Support

The numbers in the table specifies the first browser version that fully supports the selector.

Selector
:root 4.0 9.0 3.5 3.2 9.6

CSS Syntax

:root {
  css declarations;
} Demo


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