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CSS3 :root Selector
Complete CSS Selector Reference
Example
Set the background color for the HTML document:
:root
{
background:#ff0000;
}
{
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.
Browser Support
The :root selector is supported in all major browsers, except IE8 and earlier.
Complete CSS Selector Reference
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