Trim whitespace inside and around CSS rules & declarations.
Use the :focus-visible pseudo-selector in CSS
Normalize URLs with PostCSS
Ensure CSS selectors are unique.
Merge longhand properties into shorthand with PostCSS.
Nest rules inside each other in CSS
Use a place-* shorthand for align-* and justify-* in CSS
PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.
Use two values display syntax for inner and outer display types.
Use unquoted format on @font-face CSS definitions.
SCSS parser for PostCSS
Use the :focus-within pseudo-selector in CSS
PostCSS plugin to transform clamp() to combination of min/max
Use the :any-link pseudo-class in CSS
Use the overflow shorthand in CSS
Use Custom Selectors in CSS
Use the rebeccapurple color keyword in CSS
Discard duplicate rules in your CSS files with PostCSS.
Use the ic length unit
Use 4 & 8 character hex color notation in CSS
Use the gap, column-gap, and row-gap shorthand properties in CSS
Use logical properties and values in CSS
PostCSS plugin to transform W3C font-variant properties to more compatible CSS (font-feature-settings)
Discard comments in your CSS files with PostCSS.