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

Use the unset keyword in CSS.

Discard comments in your CSS files with PostCSS.

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 the :dir pseudo-class in CSS

Use the :any-link pseudo-class in CSS

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

Use space and slash separated color notation in CSS

Use logical properties and values in CSS

Use the color() function in CSS

PostCSS plugin to transform clamp() to combination of min/max

Minify gradient parameters with PostCSS.

Use hwb() color functions in CSS

Style form elements when they are empty

A pseudo-class for matching elements in a selector list

Normalize wrapping quotes for CSS string literals.

Use text-decoration in it's shorthand form in CSS

Use nested calc() expressions in CSS

Detective to find dependents of CSS (PostCSS dialect)