CSS Next

PostCSS-cssnext is a PostCSS plugin that helps you to use the latest CSS syntax today. It transforms new CSS specs into more compatible CSS so you don't need to wait for browser support.

Prior to 2015, CSS was frustrating by not having any specification for features we were looking for. No variables, no math, no color manipulation & no customization. Things are going to change soon since a lot of work has been made by the W3C to write new specs to make our life easier. With cssnext, you can start using some new features today!

Yes, cssnext is lightning fast. It uses PostCSS which has a way faster CSS parser. It's a good competitor to libsass, a bit faster than LESS and Stylecow, and way faster than Myth or original Ruby Sass.

You can try postcss-cssnext in your browser now. Check out postcss-cssnext on GitHub or try it in your browser.

You can follow @cssnext to get the latest news or join the chat on gitter if you have any questions.

Some features of cssnext include automatic vendor prefixes, custom properties & var(), custom properties set & @apply, reduced calc(), custom media queries, media queries ranges, custom selectors, nesting, image-set() function, color() function, hwb() function, gray() function, #rrggbbaa colors, rgba function (rgb fallback), rebeccapurple color, font-variant property, filter property (svg fallback), initial value, rem unit (px fallback), :any-link pseudo-class, :matches pseudo-class, :not pseudo-class (to l.3), ::pseudo syntax (: fallback), overflow-wrap property (word-wrap fallback), attribute case insensitive, rgb() function (functional-notation), hsl() function (functional-notation), system-ui font-family (font-family fallback), and more.