Overview
Documentation covering modern CSS features and patterns that replace older, more complex implementations.
Why Modern CSS?
Section titled “Why Modern CSS?”Modern CSS provides native solutions for layouts, styling, and responsive design that previously required preprocessors, JavaScript, or complex workarounds. These native implementations offer:
- Better performance - Browser-optimized implementations
- Less code - No preprocessors or JavaScript required for many patterns
- Better maintainability - Cleaner, more declarative syntax
- Future-proof - Standards-based approaches that will continue to be supported
Contents
Section titled “Contents”- CSS Grid - Two-dimensional layouts vs float hacks
- Custom Properties - Native CSS variables vs preprocessor variables
- Container Queries - Component-based responsive design vs media queries only
- Logical Properties - Internationalization-friendly properties vs directional ones
- :has() Selector - Parent selection vs JavaScript workarounds
- Aspect Ratio - Native aspect-ratio vs padding-top hack
- Scroll Snap - Native scroll snapping vs JavaScript carousels
- Clamp & Fluid Typography - Fluid sizing vs breakpoint-based sizing
- Cascade Layers - Explicit specificity control vs !important chains
- CSS Nesting - Native nesting vs preprocessor nesting