The CSS clip-path polygon function accepts values outside the 100% range which is handy to create custom corners.
Topic: CSS โ Page 2
An accessible example implemenation of a custom element that works without JavaScript.
A CSS snippet to center main content but still allow components to render full-width with CSS Grid areas.
Custom properties doesn't work in CSS url() functions because without quotes the parser treats the entire declaration as a url-token.
All major browsers replaced
:focus
with:focus-visible
and this makes custom outline code redundant.