feat: support fraction widths like 1/2 and 12/12 - #475
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Typing a fraction like 1/2 in the width setting previously produced an invalid arbitrary class (w-[1/2]). Fractions now map to native Tailwind utilities (w-1/2, min-w-5/12), and whole fractions like 12/12 normalize to the full keyword (w-full) since Tailwind no longer ships n/n classes.
ysamcode
requested review from
liamwalder,
lunenas and
tristan-mouchet
as code owners
July 28, 2026 06:28
MCP instructions and the design reference did not mention fraction widths, so agents had no way to discover them. Also add common width fractions to the class autocomplete suggestions.
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Summary
Allow entering Tailwind fraction values (
1/12…12/12) in the width and other sizing inputs. Fractions map to native Tailwind utilities likew-1/2, and whole fractions like12/12convert tow-fullsince Tailwind no longer shipsn/nclasses.Changes
1/2→w-1/2,5/12→min-w-5/12) instead of invalid arbitrary classes (w-[1/2])12/12,6/6) to thefullkeyword (w-full)w-1/2,w-1/3,w-2/3,w-1/4,w-3/4) to class autocomplete suggestionsTest plan
1/2in the width input — layer getsw-1/2and renders at 50% width12/12in the width input — layer getsw-fulland the input reads back100%5/12in min/max width or height inputs — native fraction classes are generated100%,320,50%,fit,auto) still convert as beforew-1/2and friends