:default

The :default CSS pseudo-class matches the default element in a group of related form controls, such as checkboxes and radio buttons with the checked attribute. To learn more, see :default at MDN.

Compatibility (view on caniuse.com)

• Chrome 10 Released on 2011-03-08
• Chrome Android 18 Released on 2012-06-27
• Edge 79 Released on 2020-01-15
• Firefox 4 Released on 2011-03-22
• Firefox for Android 4 Released on 2011-03-29
• Safari 5 Released on 2010-06-07
• Safari on iOS 5 Released on 2011-10-12