CSS @function design logic lab

Typed parameters feed named local declarations. Negative and lower-bound steps resolve to zero, ordinary steps scale the live unit, and oversize steps stop at eight units. The calc() baseline remains an independent product path.

Unit in pixelsOrdinary step

fallback probe

native probe

invalid typed call

undefined function call

Not run

Live native, fallback, and expected values
Branch	Step	Unit	Expected	Fallback	Native	Verdict

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