CSS simplification/unification

[booski]

The styles for the site should be streamlined so that elements get the right style by default with minimal additional styling needed (if any).

Styles for base tags (ex. button, h1, body) would help with this, as would some generic css classes (ex. small, inline, highlight) that could be used for certain common style needs. Using semantic tags (header, menu, aside, etc) may help reusability as well.

The goal is to be able to add new pages/buttons/etc in resultpress with no custom styles and they just look correct immediately.