Navigation fixes

Changed how some of the navigation worked. Getting it setup to where I
can start trying to add the anchor slide code.
Drop Shadow and Borders

Added a drop shadow to the description class and a border to the gallery
class.
Anchor Scrolling

Added the smooth scrolling to anchor points.
Small changes

Quickly added some space to the very bottom of the index. Changed the
description class so that it lines up with the gallery.