box-shadow
Widely available since 2018-01-29
The box-shadow CSS property applies shadow effects around an element's frame. This can create drop shadow and inner shadow effects.
Learning resources on MDN
Browser support (view on caniuse.com)
- Chrome 10 Released on 2011-03-08
- Chrome Android 18 Released on 2012-06-27
- Edge 12 Released on 2015-07-29
- Firefox 4 Released on 2011-03-22
- Firefox for Android 4 Released on 2011-03-29
- Safari 5.1 Released on 2011-07-20
- Safari on iOS 5 Released on 2011-10-12