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Certain animations can be distracting and cause dizziness, nausea, headaches, and seizures in people with vestibular and photosensitivity disorders.
To avoid harmful animation patterns
- Limit blinking or flashing to 3 times a second
Common harmful animation patterns include:
- Mouse-triggered scaling
- 3D zoom and blur
- Parallax effects
- Variable speed scrolling
- Plane-shifted scrolling
- Constant animation/floating
Useful resources:
WCAG reference:
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