Convert two value syntax for repeat-style into one value.
Normalize CSS animation/transition timing functions.
Minify at-rule params with PostCSS
Reduce transform functions with PostCSS.
Trim whitespace inside and around CSS rules & declarations.
Use the :focus-visible pseudo-selector in CSS
Normalize keyword values for position into length values.
Normalize URLs with PostCSS
PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors
PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.
Ensure CSS selectors are unique.
SCSS parser for PostCSS
Nest rules inside each other in CSS
Merge longhand properties into shorthand with PostCSS.
Use the :focus-within pseudo-selector in CSS
Use unquoted format on @font-face CSS definitions.
Use a place-* shorthand for align-* and justify-* in CSS
Use two values display syntax for inner and outer display types.
Use the :any-link pseudo-class in CSS
Use Custom Selectors in CSS
Use the rebeccapurple color keyword in CSS
Discard duplicate rules in your CSS files with PostCSS.
Use the ic length unit
PostCSS plugin to transform clamp() to combination of min/max