- tabs now have tabindex; they now work with tab navigation
This is not a perfect solution yet (it pops back up for the header)
But it is better than the current... nothing
- Default categories now works with tab navigation
- tabs, checkbox-onoff & default category label now support the Enter key
- Fixed bottom buttons focus outline
- Reset defaults/back buttons are now buttons
This, alongside some aria-trickery, should allow the current
a element based workflow to remain,
whilst hopefully still being keyboard
and screenreader accessible
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