: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.
css
/* Selects the root element of the document:
<html> in the case of HTML */
:root {
background: yellow;
}
Syntax
css
:root {
/* ... */
}
Examples
Declaring global CSS variables
:root
can be useful for declaring global CSS variables:
css
:root {
--main-color: hotpink;
--pane-padding: 5px 42px;
}
Specifications
Specification |
---|
Selectors Level 4 # root-pseudo |
Browser compatibility
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