Counters (CSS)Baseline · Widely available
The counter-reset and counter-increment CSS properties and the counter() and counters() functions automatically number headings or ordered list items.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jul 29, 2015. Widely available since Jan 29, 2018.
Browser support
DesktopChrome
1–1Not supported
2+Supportedsince May 21, 2009
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1+Supportedsince Nov 9, 2004
Current: 157Safari
1–2Not supported
3+Supportedsince Oct 26, 2007
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4–24Not supported
25+Supportedsince Oct 29, 2013
Current: 157Safari iOS
1+Supportedsince Jun 29, 2007
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: counter-increment.
Feature detection
CSS · check before using
@supports (counter-increment: initial) {
/* styles that rely on counter-increment */
}
/* or in JavaScript */
if (CSS.supports("counter-increment", "initial")) {
// use it
}Documentation (MDN)
Specification
Usage share
Sub-features
Support for each part of the feature (9). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| counter-increment | 2 | 12 | 1 | 3 | 18 | 25 | 1 |
| counter-increment.list-item | 28 | 12 | 1 | 9 | 28 | 25 | 9 |
| counter-increment.none | 2 | 12 | 1 | 3 | 18 | 25 | 2 |
| counter-reset | 2 | 12 | 1 | 3 | 18 | 25 | 1 |
| counter-reset.list-item | ✕ | ✕ | 1 | ✕ | ✕ | 25 | ✕ |
| counter-reset.none | 2 | 12 | 1 | 3 | 18 | 25 | 2 |
| counter-reset.reset_does_not_affect_siblings | ✕ | ✕ | 82 | ✕ | ✕ | 82 | ✕ |
| <counter> | 1 | 12 | 1 | 3 | 18 | 4 | 1 |
| <counters> | 1 | 12 | 1.5 | 3 | 18 | 4 | 1 |