Counters (CSS)
Widely available since 2018-01-29
The counter-reset and counter-increment CSS properties and the counter() and counters() functions automatically number headings or ordered list items.
Learning resources on MDN
Browser support (view on caniuse.com)
- Chrome 2 Released on 2009-05-21
- Chrome Android 18 Released on 2012-06-27
- Edge 12 Released on 2015-07-29
- Firefox 1 Released on 2004-11-09
- Firefox for Android 25 Released on 2013-10-29
- Safari 3 Released on 2007-10-26
- Safari on iOS 1 Released on 2007-06-29