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th-has-data-cells

Use when reviewing rendered HTML, interactive components, or design-system patterns related to Ensure table headers associate with data cells. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.

skills/th-has-data-cells/SKILL.md

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# Ensure table headers associate with data cells

Orphaned headers without data cells can confuse users of assistive technology and indicate a broken table structure.

## Quick Reference

- Every `<th>` must be associated with one or more `<td>` cells
- Avoid empty headers that don't describe any data
- Remove unnecessary headers to reduce screen reader noise

## Check

Verify that all `<th>` elements are correctly associated with data cells.