calc()
Widely available since 2018-01-29
The calc() CSS function computes mathematical expressions such a calc(100%/3 - 1em).
Learning resources on MDN
Browser support (view on caniuse.com)
- Chrome 26 Released on 2013-03-26
- Chrome Android 28 Released on 2013-07-10
- Edge 12 Released on 2015-07-29
- Firefox 16 Released on 2012-10-09
- Firefox for Android 16 Released on 2012-10-09
- Safari 7 Released on 2013-10-22
- Safari on iOS 7 Released on 2013-09-18