Views exposed filter button margin

Pretty minor issue: submit button isn't aligned on views exposed forms.

Solution is just to increase the top margin so the button is displayed on the same level as the field itself.

Before: http://i.imgur.com/UfqMWNe.png
After: http://i.imgur.com/UkytanJ.png

Patch is attached.

Side-question: why is the overrides.css file minified in the theme itself?

Thanks!