When authoring CSS we have to carefully think about source code order, selector specificity, and the use of !important.
Create (pure CSS) Scroll-Linked Animations with Element-based Offsets using @scroll-timeline from the “Scroll-linked Animations“ CSS Specification.
In “CSS Box Sizing Module Level 4” a new aspect-ratio CSS property is defined. Let’s take a look at how to use it.
Don't fiddle too much with your forms‘ layout. Even a small innocent piece of CSS could leave you with a poor #UX and degrade #A11Y.