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animationsVercel

Interruptible

MUST

MUST: Animations are interruptible and input-driven (avoid autoplay)

Animations are cancelable by user input

Bad

Good

Why it matters

Don't force users to wait for animations to complete. If a user interacts during an animation (clicking, scrolling, etc.), the animation should either instantly complete or transition to the new state. Never block interaction during animation.

References

Built by Gleb Stroganov, design engineer at Evil Martians.

The rules come from other people's skills and guidelines — Vercel, Rauno Freiberg, @Ibelick, impeccable, Emil Kowalski, Tailwind, RAMS — each one credited on the Sources page. The work here is extraction and wiring: every rule is pulled into one corpus, given a good and a bad example you can operate, a MUST/SHOULD/NEVER rule an agent can paste, and a link back to where it came from.