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The border-shape CSS property sets the geometry of the border box, changing the shape of any applicable border, border image, focus outline, or shadow.

Status

Limited availability

MDN documentation

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Specifications

CSS Borders and Box Decorations Module Level 4 (#border-shape), from Cascading Style Sheets (CSS) Working Group (W3C).

Browser support

Chrome 147 Released on 2026-04-07
Chrome Android 147 Released on 2026-04-07
Edge 147 Released on 2026-04-10
Firefox ❌ Vendor position : unknown
Firefox for Android ❌ Vendor position : unknown
Safari ❌ Vendor position : unknown
Safari on iOS ❌ Vendor position : unknown

Developer votes

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