Web platform features explorer - Anchor positioning

Anchor positioning places an element based on the position of another element. For example, you can place a tooltip next to the content it references.

Status

Limited availability

MDN documentation

CSS anchor positioning

Specifications

CSS Anchor Positioning Module Level 1 (#anchoring), from Cascading Style Sheets (CSS) Working Group (W3C).

Browser support (view on caniuse.com)

Chrome ❌
Chrome Android ❌
Edge ❌
Firefox ❌ See bugzil.la/1838746 Vendor position : positive
Firefox for Android ❌ See bugzil.la/1838746 Vendor position : positive
Safari ❌ Vendor position : support
Safari on iOS ❌ Vendor position : support

Surveys

Usage (according to Chrome Platform Status)

~0.350% of page loads. More data at chromestatus.com.

Interop

Included in Interop 2025

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Developer signals

Votes: 117

If you want this feature to be available in all browsers, vote for it by adding a thumbs up reaction (👍) to this GitHub issue, and leave a comment with more information.

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