Table Widget: Styling when editing the column is very hard to see what is selected and the caret position.

[farmaazon]

The selection is not visible: both in columns' and cells' edits. When anything is selected, the caret also disappears.

This column name is actually selected:

[farmaazon]

Refinement notes:

• Probably a matter of adjusting css. If it's not, let's reestimate it.