UI: fixes sidebar settings border and active styles (PR #13990)

  • active setting should now correctly show an arrow which was previously floating in the middle of nowhere
  • uses a correct color for border separation, previously the border was present but invisible as similar to the background
  • slighty tweak padding
  • makes arrow computation based on a variable


Capture d’écran 2021-08-10 à 08 40 17

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