::before and ::after

The ::before and ::after CSS pseudo-elements select inline boxes preceding and following an element. They are often used with the content property to generate cosmetic content. To learn more, see ::after, ::before at MDN.

Compatibility (view on caniuse.com)

• Chrome 1 Released on 2008-12-11
• Chrome Android 18 Released on 2012-06-27
• Edge 12 Released on 2015-07-29
• Firefox 1.5 Released on 2005-11-29
• Firefox for Android 4 Released on 2011-03-29
• Safari 4 Released on 2009-06-08
• Safari on iOS 3.2 Released on 2010-04-03