Keep only the CSS you need based on comments and your browserslist
Ensure values are ordered consistently in your CSS.
PostCSS plugin to fallback initial keyword.
Use the range notation in CSS media queries
Use flow-relative (inline-start and inline-end) values for float and clear
PostCSS plugin to fallback initial keyword.
Use double-position gradients in CSS
PostCSS plugin to use CSS Modules everywhere
Use the parts of normalize.css or sanitize.css you need from your browserslist
Use the color-mix function in CSS
PostCSS plugin enabling custom properties sets references
Use the relative color syntax in CSS
Use pow(), sqrt(), hypot(), log(), exp() exponential functions in CSS
Replaces a file extension with another one.
PostCSS syntax for parsing HTML (and HTML-like)
Use logical values in the resize property
Use number values in aspect-ratio media queries.
The Reference Element Pseudo-class: :scope
Convert values with PostCSS (e.g. ms -> s)
PostCSS plugin to transform W3C CSS color function to more compatible CSS.
Optimise inline SVG with PostCSS.
Use logical overscroll behavior properties and values in CSS
PostCSS plugin to keep rules and at-rules content in order.
Indent-based CSS syntax for PostCSS