Keep only the CSS you need based on comments and your browserslist
Use the range notation in CSS media queries
Use oklab() and oklch() color functions in CSS
Ensure values are ordered consistently in your CSS.
PostCSS plugin to fallback initial keyword.
Use flow-relative (inline-start and inline-end) values for float and clear
Use the color-mix function in CSS
Use the relative color syntax in CSS
Use double-position gradients in CSS
PostCSS plugin to fallback initial keyword.
Use the parts of normalize.css or sanitize.css you need from your browserslist
Use pow(), sqrt(), hypot(), log(), exp() exponential functions in CSS
Convert values with PostCSS (e.g. ms -> s)
PostCSS syntax for parsing HTML (and HTML-like)
Use number values in aspect-ratio media queries.
Use vb and vi length units in CSS
Use logical values in the resize property
Optimise inline SVG with PostCSS.
The Reference Element Pseudo-class: :scope
PostCSS plugin to keep rules and at-rules content in order.
Use logical overscroll behavior properties and values in CSS
A CSS Modules transform to extract local aliases for inline imports
Indent-based CSS syntax for PostCSS
Use logical overflow properties and values in CSS