Updated header styles

![headers-1](https://f.cloud.github.com/assets/518943/1264340/4ae97474-2c5e-11e3-9687-9c75ae14700b.png)
![headers-2](https://f.cloud.github.com/assets/518943/1264347/6aaa36cc-2c5e-11e3-836e-2ae704c3661d.png)