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conformance · v150

v150 · overscroll-behavior-chain — 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-overscroll-1/#propdef-overscroll-behavior chromestatus: #5176802466201600 generated 2026-06-01T08:14:34Z by conformance-author-v1-subagent
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pass
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fail
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blocked
6
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id contract kind verdict detail
overscroll-behavior-baseline overscroll-behavior accepts auto/none/contain (baseline). css-supports
overscroll-behavior-chain-supported overscroll-behavior accepts the new 'chain' keyword. spec ↗ css-supports
overscroll-behavior-x-chain The chain keyword applies to the per-axis longhand overscroll-behavior-x. css-supports
overscroll-behavior-y-chain Chain also applies to overscroll-behavior-y. css-supports
overscroll-behavior-chain-roundtrip Setting overscroll-behavior: chain via CSSOM round-trips through getComputedStyle. script
overscroll-behavior-bogus-rejected An unknown keyword is rejected — parser strictness preserved. script