XF 2.2 Removing the "Button Gap"

I've been working on a series of new themes for our site and I've run into one minor issue that I can't find a way to change.


Basically, that small orange gap between the buttons is incredibly noticible on certain devices.

Fully aware that no one but myself will ever care, is there a setting somewhere in the admin panel to remove that gap so the buttons form a solid block?
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