Reference index / 화면·레이아웃 전환
Tab Indicator Motion
Movement of an underline, background, or other selected-tab marker.
When to use it
Continuity when switching tabs.
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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