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conformance · v138

v138 · css-sibling-index-and-sibling-count — conformance probe

5 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-values-5/#tree-counting chromestatus: #6225478530367488 generated 2026-06-01T09:10:00Z by conformance-author-v1-subagent
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id contract kind verdict detail
sibling-index-supported sibling-index() is accepted as an <integer> in calc(). spec ↗ css-supports
sibling-count-supported sibling-count() is accepted as an <integer> in calc(). spec ↗ css-supports
sibling-index-bare sibling-index() can be used bare as an integer property value. spec ↗ css-supports
sibling-functions-resolve-to-integers Computed value from calc(sibling-index()) produces a positive integer for a real DOM child. spec ↗ script
sibling-count-resolves sibling-count() resolves to the total number of element siblings (including the element itself). spec ↗ script