Load Pure CSS and remove WP normalization styles
Tweak colors, move header to the left
Change menu nav to buttons
Update heading markup & style
Add responsive design to header
Add possible sidebar CSS
Set custom background default appropriately
Make widget <li>s into a simple grid
Improve typography, standardize color hexes
Hide unnecessary 'updated' date
Cleanup a bit & align with Google CSS style guide
Tweak heading sizes
Tweak byline order
Increase post heading size