Motion
A way to animate static design elements to focus the user’s attention and tell stories
Why it matters
Motion is information: where the sheet came from, what the tap produced. The test is subtraction — if removing an animation loses no meaning, it was decoration, billed at 300ms per view.
The numbers
- 200-400ms — where most UI motion lives
- prefers-reduced-motion — always honoured
Related terms
On the checklists
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