Styled footer area

I added some CSS to the demo so that the footer area (#fifth) would look

1.  Better.  My OCD said that the links shouldn't be blue.
2.  More like the [nikebetterworld.com](http://www.nike.com/us/en_us/c/better-world/) website, which I used as a basis for the style that I added.

I didn't touch any of your positioning or sizing, so nothing is broken by my changes.