Baseline and browser support in 2026
How to check and communicate CSS browser support using Baseline in 2026.
content-visibility: skipping off-screen rendering
How content-visibility auto and hidden skip rendering work, why contain-intrinsic-size is mandatory, and what stays reachable by find-in-page.
CSS containment: the contain property
How the contain property isolates layout, paint, and size calculations for better rendering performance.
Performance-first CSS
Load and render strategies that keep CSS fast in 2026. CLS, FCP, animation performance, and more.