Footer top to border instead of `:before`. Closes #12.
Use Gentium. Closes #11.
Start setting up flex for footer. Not yet working. (#7, #9)
Lots of style tweaks
- create smcp class and other gentium_plus_smcp in various places (relates to #11)
- h1 and h2 styles in article contents (#6)
- add content wrapper around article content for ease of styling (#1, #2)