The :root
CSS pseudo-class matches the root element of a tree representing the document. Applied to HTML, :root
represents the <html>
element and is identical to the selector html
, except that its specificity is higher.
:root { style properties }
Using :root
can be useful to declare global CSS Variables:
:root { --main-color: hotpink; --pane-padding: 5px 42px; }
Specification | Status | Comment |
---|---|---|
Selectors Level 4 The definition of ':root' in that specification. | Working Draft | No change |
Selectors Level 3 The definition of ':root' in that specification. | Recommendation | Initial definition |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 1 | 1.0 (1.7 or earlier) | 9 | 9.5 | 1.0 |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/CSS/:root