Cross browser testing #7210
Description
In this PR review #7134 (review), I noticed checkboxes in <thead>s are not visible in FF and are out of alignment in Safari.
We should
- Do a visual review of all components/demos/examples Firefox, Safari, and Edge.
- Use chrome as the baseline with figma as an additional resource if needed
- @srambach suggested using https://responsively.app/, which looks like it could help quite a bit
Longer term, we can hopefully 1) sign off on the look of things in FF and Safari, and 2) configure our visual regression tool to test in FF and Safari and alert us when things change.