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