Minify at-rule params with PostCSS

Normalize URLs with PostCSS

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

Use unquoted format on @font-face CSS definitions.

SCSS parser for PostCSS

Use Custom Selectors in CSS

Use the ic length unit

Use the overflow shorthand in CSS

Use the :focus-visible pseudo-selector in CSS

Discard comments in your CSS files with PostCSS.

Merge longhand properties into shorthand with PostCSS.

Use the rebeccapurple color keyword in CSS

Use 4 & 8 character hex color notation in CSS

Use the unset keyword in CSS.

Use a place-* shorthand for align-* and justify-* in CSS

Use the :any-link pseudo-class in CSS

Use the :dir pseudo-class in CSS

PostCSS plugin to transform W3C font-variant properties to more compatible CSS (font-feature-settings)

Discard duplicate rules in your CSS files with PostCSS.

Use logical properties and values in CSS