PostCSS

Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.

:fullscreen {
}

CSS input

:-webkit-:full-screen {
}
:-moz-:full-screen {
}
:full-screen {
}

CSS output

Write future-proof CSS and forget old preprocessor specific syntax. Use the latest CSS syntax today with cssnext. It transforms CSS specs into more compatible CSS so you don’t need to wait for browser support.

:root { 
  --red: #d33;
}
a { 
  &:hover {
    color: color(var(--red) a(54%));
  }
}

CSS input

a:hover { 
  color: #dd3333;
  color: rgba(221, 51, 51, 0.54);
}

CSS output

CSS Modules means you never need to worry about your names being too generic, just use whatever makes the most sense.

.name {
  color: gray;
}

CSS input

.Logo__name__SVK0g {
  color: gray;
}

CSS output

Enforce consistent conventions and avoid errors in your stylesheets with stylelint, a modern CSS linter. It supports the latest CSS syntax, as well as CSS-like syntaxes, such as SCSS.