Banner Styles

## Changes
- Fixes a handful of small linting errors (overly specific padding shorthand and single quotes in JS)
- Moves `line-height` padding to actual padding on banners to allow for more compact multi-line banners

![after](https://cloud.githubusercontent.com/assets/1479130/2585156/8a219bf4-b9e8-11e3-9104-fd86ec955732.png)