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conformance · v136

v136 · corner-shaping-corner-shape-superellipse-squircle — conformance probe

7 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://drafts.csswg.org/css-borders-4/#corner-shaping chromestatus: #5357329815699456 generated 2026-06-01T08:03:56Z by conformance-author-v1-subagent
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id contract kind verdict detail
corner-shape-supported The corner-shape longhand accepts a shape keyword such as squircle. spec ↗ css-supports
corner-shape-round corner-shape accepts the default `round` keyword, preserving border-radius compatibility. spec ↗ css-supports
corner-shape-bevel corner-shape accepts the bevel keyword. spec ↗ css-supports
corner-shape-superellipse corner-shape accepts a superellipse() function with an explicit curvature exponent. spec ↗ css-supports
corner-top-left-shape-longhand Per-corner longhand corner-top-left-shape is supported. spec ↗ css-supports
border-radius-still-supported The existing border-radius property still parses — corner-shape is additive on top of border-radius. spec ↗ css-supports
corner-shape-roundtrip Setting corner-shape via CSSOM round-trips through getComputedStyle. spec ↗ script