Use the :focus-visible pseudo-selector in CSS

Style form elements when they are empty

Full CSS support for JSX without compromises

Parse CSS Cascade Layer names.

Style elements relative to other elements in CSS

Use the overflow shorthand in CSS

web-component-designer addon: Stylesheet Parser Service using css-tree

CSS grammar for tree-sitter

List of standard and browser specific CSS functions.

Selectors decision tree - choose matching selectors, fast

Use the ic length unit

Use env() variables in CSS

A pseudo-class for matching elements in a selector list

TypeScript definitions for css-font-loading-module

Use 4 & 8 character hex color notation in CSS

Use unquoted format on @font-face CSS definitions.

Generate fallback values for content with alt text

Use the rebeccapurple color keyword in CSS

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations (with updated dependencies)

Use two values display syntax for inner and outer display types.