Rename Menu Template
Remove “page” class from the menu template. Since this isn’t really a page, we don’t want to accidentally apply those styles.
Move shared post & page styles into index, and add the post thumbnail to pages
Add a page template for “Two Column” pages. Most content looks odd at two-columns (especially since pages can contain contact forms, etc), so let’s make the Two Column layout Opt-in.
Bump $content_width to correct value
Flatten out navigation before displaying it. Might be final, could also be a stopgap until dropdown styles happen. See #1