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CSS Scroll‑Driven Animations Playground - Online Demo

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CSS Scroll‑Driven Animations Playground

Interactive demo of animation-timeline, scroll-timeline & view-timeline

Checking browser support...
Scroll: 0%
Scroll Timeline — Fade & Slide
This element fades in and slides up as you scroll
Scroll Timeline — Scale
Scales from 0.2x to 1x
Scroll Timeline — Rotate
Rotates 360° and morphs shape
Scroll Timeline — Color Flow
Background color transitions across the scroll
— keep scrolling —
View Timeline
View Timeline Card #1
This card reveals itself when it enters the viewport using view-timeline and animation-range: entry.
View Timeline
View Timeline Card #2
Each card defines its own view-timeline and inner elements animate on entry.
View Timeline
View Timeline Card #3
Notice how each card animates independently as it scrolls into the visible area of the container.
— end of demo content —
Preset Animations
Animation Range
Live Info
Timeline: --sda-main-timeline Axis: y (block)
Generated CSS
Updates in real-time 
/* Scroll-driven animation CSS */
Frequently Asked Questions

CSS Scroll-Driven Animations allow you to tie animation progress directly to a scroll position, rather than using time-based keyframes. With animation-timeline: scroll() or animation-timeline: view(), animations advance as the user scrolls, creating performant, declarative scroll-linked effects without JavaScript.

As of 2025, Chrome 115+, Edge 115+, and Opera 101+ fully support scroll-driven animations. Safari and Firefox are actively implementing the spec. You can use @supports (animation-timeline: scroll()) for progressive enhancement.

scroll() ties animation progress to the scroll position of a container (0%–100% of scrollable range). view() ties animation progress to an element's visibility within a scrollport — the animation plays as the element enters, is contained within, or exits the viewport. Named timelines (scroll-timeline, view-timeline) offer more control.

animation-range controls which portion of the timeline the animation covers. For scroll timelines, use percentages like 20% 80%. For view timelines, use keywords: entry, exit, contain, cover combined with percentage offsets — e.g., entry 0% entry 100% plays the animation while the element enters the viewport.

Yes! You can define multiple named timelines using scroll-timeline: --name on different scroll containers, and assign different elements to each timeline using animation-timeline: --name. Each timeline operates independently.

Named scroll timelines are defined with the scroll-timeline shorthand property on a scroll container: scroll-timeline: --my-timeline block;. Child elements then reference it via animation-timeline: --my-timeline;. This allows multiple elements to share the same timeline and is more flexible than anonymous scroll().

Chrome DevTools has dedicated support: open the Animations panel, and scroll-driven animations appear with a scroll scrubber. You can also use the Elements panel to inspect animation-timeline and animation-range computed values. The Rendering tab can highlight scroll-snap and scroll-driven animation regions.

Scroll-driven animations run on the compositor thread, making them extremely performant — they don't trigger layout or paint on the main thread. For best results, animate only transform and opacity properties. Avoid animating properties that trigger layout (like width, height, or top).

Use @supports (animation-timeline: scroll()) { ... } to wrap scroll-driven animation rules. Inside a @supports not block, provide a static fallback. You can also use a JavaScript polyfill or the ScrollTimeline Web API for programmatic fallbacks.

Absolutely! Use scroll-timeline: --name inline; (or x) for horizontal scroll containers. The axis parameter — block (vertical/y) or inline (horizontal/x) — determines which scroll axis drives the animation timeline.
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