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Web Platform Baseline Status Breakdown Total Features: 1191
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Showing 4 of 4 features

2021

4 features
• April 2021

The ::file-selector-button CSS pseudo-element selects the button of a <input type="file"> element.

Chrome 89
Firefox 82
Safari 14.1
Edge 89
Baseline Date: Apr 26, 2021
• January 2021
Widely Available

The :is() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list.

Chrome 88
Firefox 82
Safari 14
Edge 88
Baseline Date: Jan 21, 2021
Widely Available

The :not() functional pseudo-class matches elements that do not match the selectors in its argument.

Chrome 88
Firefox 84
Safari 9
Edge 88
Baseline Date: Jan 21, 2021
Widely Available

The :where() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list. It is functionally equivalent to the selectors in the list, but doesn't affect the CSS rule specificity.

Chrome 88
Firefox 82
Safari 14
Edge 88
Baseline Date: Jan 21, 2021