Minify at-rule params with PostCSS

Normalize CSS animation/transition timing functions.

Trim whitespace inside and around CSS rules & declarations.

Reduce transform functions with PostCSS.

Normalize URLs with PostCSS

Use two values display syntax for inner and outer display types.

Use the :focus-within pseudo-selector in CSS

Use unquoted format on @font-face CSS definitions.

Use the :focus-visible pseudo-selector in CSS

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

Use the overflow shorthand in CSS

Use the ic length unit

SCSS parser for PostCSS

Use 4 & 8 character hex color notation in CSS

Discard comments in your CSS files with PostCSS.

Use Custom Selectors in CSS

Use the rebeccapurple color keyword in CSS

Use the unset keyword in CSS.

Use the :dir pseudo-class in CSS

Use the gap, column-gap, and row-gap shorthand properties in CSS