Button Spacing
<button>Buttons need their space.</button>
<button>But not like Luke-Skywalker-on-his-isolated-stone-monolith-island amounts of space</button>
Capitalization
Button text should be ALL CAPS!!!!
Titles should use sentence case.
<div>Button text should be ALL CAPS!!!!</div>
<div>Titles should use sentence case.</div>
Error Messages
How does that make you feel?
Period Usage
You should totally use periods...sometimes.