::before and ::afterBaseline · Widely available
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.
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+Supportedsince Dec 11, 2008
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1–1Not supported
1.5+Supportedsince Nov 29, 2005
Current: 157Safari
1–3.1Not supported
4+Supportedsince Jun 8, 2009
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4+Supportedsince Mar 29, 2011
Current: 157Safari iOS
1–3Not supported
3.2+Supportedsince Apr 3, 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: ::after.
Feature detection
CSS · check before using
@supports selector(::after) {
/* styles that use ::after */
}
/* or in JavaScript */
if (CSS.supports("selector(::after)")) {
// use it
}Documentation (MDN)
Specification
Usage share
Sub-features
Support for each part of the feature (4). The overall table above shows when the whole feature works.