Interview frequency: …
Short answer
Offer calmer alternatives (such as a fade instead of sudden zooming, jumping, and parallax), and programmatically respect the system's prefers-reduced-motion preference.
Explanation
Fast, large animations, Parallax Scrolling, and sudden zooms can cause dizziness, headaches, and severe nausea for people with vestibular disorders or epilepsy. Accessibility practice requires: (1) check the system-level reduced-motion setting; (2) replace displacement animations with soft, immediate fades; and (3) provide a direct control to stop any animation or autoplay video on the platform.
Common mistakes
- Ignoring operating-system reduced-motion settings and forcing all users to watch jarring transitions.
- Designing moving video backgrounds or complex Parallax effects without a way to pause them.