Respect reduced motion
Under prefers-reduced-motion, remove non-essential transforms and transitions.
Draft — not yet reviewed by a maintainer
Why it matters
For people with vestibular disorders, movement on screen can cause dizziness and nausea. The operating-system setting is how they ask for less.
How to check it
Emulate prefers-reduced-motion: reduce; only essential motion remains.
The default it guards against
Slide-ins, parallax and animated counters that run whatever the reduced-motion setting says.
Library items that apply it
Where it comes from
- WCAG 2.2 SC 2.3.3 Animation from Interactions (AAA)
- docs/quality-gates.md (Accessibility: prefers-reduced-motion respected)
- design.md §10 (motion)
Repository paths refer to the Tessli repository ; WCAG references are to WCAG 2.2.