Mobile tweaks

**Status:**
:warning: Not ready for merge. :warning: 


**Changelist:**
* Added header menu to homepage
* Increased font size and line height
* Adjusted post column from 6 to 8.
* Made the header not shrink if you're on a mobile view.


**Known issues:**
* Active class is applied to every link in the mobile header on the homepage.
* Text on homepage needs to be capped at a certain size to prevent the navigation from being hidden.