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conformance · v150

v150 · allow-optional-rounding-parameter-for-polygon — conformance probe

6 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-shapes-1/#funcdef-basic-shape-polygon chromestatus: #6636392944893952 generated 2026-06-06T10:22:22Z by codex-goal-setting
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id contract kind verdict detail
polygon-still-supported The basic polygon() function continues to be accepted by clip-path (no regression). css-supports
polygon-round-keyword The polygon() function accepts an optional 'round <length>' parameter before the coordinate list. spec ↗ css-supports
polygon-round-percentage-rejected The rounding argument is a <length>, so a percentage such as round 10% is rejected. spec ↗ script
polygon-round-with-fill-rule Rounding works alongside the optional <fill-rule> first argument. css-supports
polygon-round-roundtrips-via-cssom Setting a rounded polygon via CSSOM round-trips through getComputedStyle without dropping the round token. script
polygon-shape-outside Rounded polygon() is also accepted in shape-outside, the other site that takes <basic-shape>. css-supports