Fix minor CSS thingies

 - Fixed hover transitions (Using transitions with :hover selectors will make the outwards transition not fire as the element will no longer be in its hover state when the transition should happen. The !important is also unnecessary in this context.)
 - Removed the trailing middot from the end of the list.
 - Made color hexcode capitalization consistent.
 - Added missing units.


These changes are untested, but they should cause no problems.