Main content container box shadow position too low for white branded skins

Can change the main content container box shadow:
	.oae-main-content

To:
	-webkit-box-shadow: 0 0 4px #DBDBDB;
	-moz-box-shadow: 0 0 4px #DBDBDB; 
	box-shadow: 0 2px 0 #DBDBDB; 

Before:
![screen shot 2014-01-29 at 11 44 29](https://f.cloud.github.com/assets/1489257/2029044/e6d77e92-88db-11e3-843d-14b94e9a7df0.png)

With change:
![screen shot 2014-01-29 at 11 48 04](https://f.cloud.github.com/assets/1489257/2029047/ef3a8a02-88db-11e3-85c8-fea22624b11f.png)