Reference index / 화면·레이아웃 전환
Expand / Collapse Motion
Motion changing an area's size or the amount of content revealed.
When to use it
Cards, trees, and detailed content.
Caveats and distinctions
Manage focus, navigation history, and reading order during transitions. Distinguish navigation from decorative animation.
Implementation and classification
UI·UX 모션 / 화면·레이아웃 전환
Sources and verification status
https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API
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