Accessibility & Inclusive Motion
WCAG 2.2 compliance, prefers-reduced-motion architecture, motion scaling
strategies, and compositor-safe patterns that work for all users on all devices.
CSS Scroll-Driven
& View Transition Patterns
Master native CSS scroll-timeline and the @view-transition rule.
Eliminate JavaScript overhead, hit 60 fps frame budgets, and build inclusive motion
that works for everyone — on any device.
Modern web interfaces rely on declarative, GPU-accelerated motion to guide attention without
compromising performance or accessibility. Using native browser APIs —
animation-timeline: scroll(), view(), and
document.startViewTransition() — teams can move animation logic off the main
thread entirely, achieving deterministic frame timing that was once only possible with
heavyweight JavaScript libraries.
This site is a technical reference for frontend developers and motion engineers who need to
implement, debug, and optimise CSS scroll-driven animations and page transitions in production.
Every pattern includes compositor-safe CSS, progressive enhancement strategies, framework
examples for React, Vue, and Svelte, and prefers-reduced-motion support throughout.
Start here
-
CSS Scroll-Timeline API — how
scroll()andview()work - Rendering pipeline for scroll animations — compositor thread isolation
- Build a reading progress bar with pure CSS scroll-timeline
- Parallax effects with pure CSS — no JavaScript required
- How View Transitions work under the hood
-
Implementing
prefers-reduced-motioncorrectly
Core Animation Fundamentals
Browser rendering pipelines, compositor thread isolation, scroll-timeline architecture, View Transition lifecycle internals, cross-browser support, and fallback strategies.
- CSS Scroll-Timeline API
- Rendering Pipeline
- View Transition Under the Hood
- Browser Support & Progressive Enhancement
- Fallback Strategies
Implementation Patterns
Production-ready patterns: scroll progress indicators, parallax, SPA page swaps, sticky headers, element morphing — with CSS, React, Vue, and Svelte examples.
- Scroll Progress Indicators
- Parallax Effects
- SPA Page Swap Animations
- Sticky Header Transitions
- Cross-Route Element Morphing