Fault-tolerant CSS parser for PostCSS
Convert modern CSS into something browsers understand
Discard empty rules and values with PostCSS.
PostCSS plugin to reduce calc()
Normalize multiple value display syntaxes into single values.
Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset
Normalize unicode-range descriptors, and can convert to wildcard ranges.
Reduce transform functions with PostCSS.
Minify at-rule params with PostCSS
Convert two value syntax for repeat-style into one value.
Normalize keyword values for position into length values.
PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors
Normalize CSS animation/transition timing functions.
Normalize URLs with PostCSS
Ensure CSS selectors are unique.
Nest rules inside each other in CSS
Merge longhand properties into shorthand with PostCSS.
Trim whitespace inside and around CSS rules & declarations.
Use unquoted format on @font-face CSS definitions.
Use the :focus-visible pseudo-selector in CSS
Use a place-* shorthand for align-* and justify-* in CSS
Use the system-ui font family in CSS
Use two values display syntax for inner and outer display types.
SCSS parser for PostCSS