PostCSS plugin to unwrap nested rules like how Sass does it

PostCSS plugin to inline @import rules content with extra features

Minify colors in your CSS files with PostCSS.

PostCSS plugin to reduce calc()

Fault-tolerant CSS parser for PostCSS

Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset

Convert modern CSS into something browsers understand

Discard empty rules and values with PostCSS.

Normalize multiple value display syntaxes into single values.

Normalize keyword values for position into length values.

Normalize unicode-range descriptors, and can convert to wildcard ranges.

Nest rules inside each other in CSS

Reduce transform functions with PostCSS.

Convert two value syntax for repeat-style into one value.

Normalize CSS animation/transition timing functions.

PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors

Use the :focus-within pseudo-selector in CSS

Ensure CSS selectors are unique.

PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.

Trim whitespace inside and around CSS rules & declarations.