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conformance · v138

v138 · css-env-variable-for-os-level-font-scale — 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-env-1/#text-zoom chromestatus: #5328467685801984 generated 2026-06-01T09:05:00Z by conformance-author-v1-subagent
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pass
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fail
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blocked
5
total
id contract kind verdict detail
env-function-supported CSS env() function is supported — the surface this feature extends. spec ↗ css-supports
preferred-text-scale-env-accepted env(preferred-text-scale) is parsed in font-size context. spec ↗ css-supports
preferred-text-scale-as-fallback-number env(preferred-text-scale) with a numeric fallback resolves at computed-value time. spec ↗ script
preferred-text-scale-in-calc env(preferred-text-scale) is a <number> usable inside calc(). spec ↗ css-supports
computed-style-survives-env-fallback A computed font-size that uses env(preferred-text-scale, 1) round-trips through getComputedStyle. spec ↗ script