fix: add explicit border-border to border-width-only utilities#321
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erickteowarang
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Jun 17, 2026
Components using directional border-width utilities (border-b, border-t,
border-l, border-r) relied on the global `* { border-color: var(--border) }`
rule in `@layer base`. When consumers import Tailwind CSS after app-shell
styles, Tailwind's preflight resets border-color via shorthand, causing
thick dark borders (currentColor).
Adding explicit `astw:border-border` at the utility layer ensures the
correct color regardless of CSS import order.
Affected components: Sheet, Table, CsvImporter, CommandPalette, DataTable,
DataTable.Toolbar.
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Summary
Components using directional border-width utilities (
border-b,border-t,border-l,border-r) relied on the global* { border-color: var(--border) }rule in@layer base. When consumers import Tailwind CSS after app-shell styles, Tailwind's preflight resetsborder-colorvia shorthand, causing thick dark borders (currentColor).This is a follow-up to #317 which fixed
astw:border(all-side) usages but missed directional variants.Screen shots (bugs to be fixed in this PR)
Unnecessary black borders.
Table
Sheet
CSV Importer
Fix
Adding explicit
astw:border-borderat the utility layer ensures the correct color regardless of CSS import order.Affected Components
packages/core/src/components/sheet.tsxpackages/core/src/components/table.tsxpackages/core/src/components/csv-importer/CsvImporter.tsxpackages/core/src/components/command-palette.tsxpackages/core/src/components/data-table/data-table.tsxpackages/core/src/components/data-table/toolbar.tsxTesting
All 60 test files (1120 tests) pass. 8 snapshots updated to reflect the added
border-borderclass.