Test: Example 1: Table with header cells in the top row only (Windows Keyboard/Firefox)
Expectation: th element: NA convey its role
| Property | Value |
|---|---|
| Support | not applicable |
| AT Name | Windows Keyboard |
| AT Version | unknown |
| Browser Name | Firefox |
| Browser Version | unknown |
| OS version | unknown |
| Date | unknown |
| Notes |