The animation-timeline, scroll-timeline, and view-timeline CSS properties advance animations based on the user's scroll position. Shipping in Firefox 159 (released 2026-10-27). Probes ViewTimeline, ScrollTimeline. More: developer.mozilla.org/docs/Web/API/ViewTimeline drafts.csswg.org/scroll-animations-1/ web-platform-dx.github.io/web-features-explorer/feโฆ
(typeof ViewTimeline !== "undefined") && (typeof ScrollTimeline !== "undefined")No feature results yet. Run the test, or wait for the fuzzing network to run it across browsers.