<!-- upstream: paulirish/dotfiles - agents/skills/modern-css/SKILL.md -- Modern CSS This skill provides a reference for writing modern, robust, and efficient CSS. --- References Library For deeper coverage of specific topics, consult the files under : | File | Topic | |------|-------| | | Vertical rhythm, modular scales, font selection, web font loading, fluid type, OpenType features | | | OKLCH color spaces, tinted neutrals, palette structure, WCAG, dark mode, theming | | | Duration rules, easing curves, premium motion materials, reduced motion, perceived performance | | | Nielsen's 10 heuri…