base.css: Custom styles should not be within normalize.css section

[rdworth]

We have a number of overrides and custom styles mixed in with browser normalizations (from normalize.css) at the top of base.css. We should break these out below as

1. They are not browser normalizations (otherwise they would be considered bugs in normalize), but simply custom base styles for us
2. This inter-mixing prevents us from cleanly upgrading normalize.css when we want to change our browser support and get bug fixes, etc. This is true whether we do upgrades by hand (today) or through a build process (future).

[scottgonzalez]

I really really really really really want to rever this. We will never upgrade normalize. Ever.