Up / Down arrows become bigger when Highlighted

Up / Down arrows become bigger when Highlighted in the Resource Packs section of the settings screen.

How to reproduce:

1. Activate 2 resource packs
2. Click on the activated resource pack (both of them)
3. Hover over the Up / Down arrow next to the Green Checkmark

Observed Results: The Arrow becomes bigger when highlighted

Expected Results: The Arrow should remain the same size, even when highlighted