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conformance · v138

v138 · interpolation-progress-functional-notation-css-progress-function — 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-values-5/#progress chromestatus: #5112558941634560 generated 2026-06-01T09:35:00Z by conformance-author-v1-subagent
0
pass
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fail
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blocked
6
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id contract kind verdict detail
progress-supported-numeric-args progress(value, start, end) returns a <number> usable in number-accepting properties. spec ↗ css-supports
progress-with-length-args progress() accepts typed <length> arguments where all three share the same type. spec ↗ css-supports
progress-half-is-0.5 progress(50, 0, 100) computes to 0.5. spec ↗ script
progress-zero-at-start progress(0, 0, 100) computes to 0. spec ↗ script
progress-one-at-end progress(100, 0, 100) computes to 1. spec ↗ script
progress-extrapolates-beyond-end progress(150, 0, 100) extrapolates to 1.5 — values outside [start,end] are not clamped. spec ↗ script