Version-sensitive. Every API name, SDK gate and browser-support claim below was verified on 2026-09-08 against primary sources. What against, and when, is in . If that date is old, re-verify before acting on a version number. CSS Native - Zero-Dependency Animations & Visual Techniques When to Use CSS Native vs Library | Situation | Decision | |---|---| | < 3 animations on the page | CSS native | | Scroll-driven reveal/parallax | CSS native ( ), always inside with the content visible by default - Firefox only since 159 (Oct 2026), Safari only since 26 | | Enter/exit from | CSS native ( + ) | |…