What problem does this address?

The font-variant selection interface currently lacks hover effects for font names and checkboxes. The cursor pointer change is the only indication of interactivity.
Also, the font selection UI lacks hover effects on the font names, while it already has an effect for the arrow >.

What is your proposed solution?

• For font names: A subtle change in the background color or the border of the item to indicate the hover state
• For checkboxes: A border color change or background fill