border-radiusBaseline · Widely available
The border-radius CSS property rounds the corners of the border drawn around an element.
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
1–3Not supported
4+Supportedsince Jan 25, 2010
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1–3.6Not supported
4+Supportedsince Mar 22, 2011
Current: 157Safari
1–4Not supported
5+Supportedsince Jun 7, 2010
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4+Supportedsince Mar 29, 2011
Current: 157Safari iOS
1–4Not supported
4.2+Supportedsince Nov 22, 2010
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: border-bottom-left-radius.
Feature detection
CSS · check before using
@supports (border-radius: initial) {
/* styles that rely on border-radius */
}
/* or in JavaScript */
if (CSS.supports("border-radius", "initial")) {
// use it
}Documentation (MDN)
Specification
Usage share
Sub-features
Support for each part of the feature (16). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| border-bottom-left-radius | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-bottom-left-radius.elliptical_corners | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-bottom-left-radius.percentages | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-bottom-right-radius | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-bottom-right-radius.elliptical_corners | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-bottom-right-radius.percentages | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-radius | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-radius.4_values_for_4_corners | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-radius.elliptical_borders | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-radius.percentages | 8 | 12 | 4 | 5.1 | 18 | 4 | 5 |
| border-top-left-radius | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-top-left-radius.elliptical_corners | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-top-left-radius.percentages | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-top-right-radius | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-top-right-radius.elliptical_corners | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |
| border-top-right-radius.percentages | 4 | 12 | 4 | 5 | 18 | 4 | 4.2 |