CSS Anchor Positioning

Exploring the new CSS Anchor Positioning API for building popovers, tooltips, and dropdown menus with native browser support and JavaScript fallbacks.

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What's Explored Here

Anchor Positioning

Position elements relative to any anchor element using pure CSS, no JavaScript calculations needed.

Top Layer Elements

Popovers and dialogs in the top layer with entry/exit animations using @starting-style.

Progressive Enhancement

JavaScript fallback positioning for browsers without CSS Anchor Positioning support.

About This Project

This is an experimental playground for exploring CSS Anchor Positioning. Use the sidebar to navigate between different demos showcasing tooltips, animations, and arrow positioning techniques.