I'm noticing a problem when I add something to the shopping cart. After I click on an item and go to this template:

http://www.jamwestfoods.com/store/in...=shopping_cart

There seems to be an extra gap caused by the Estimate Shipping button underneath the Back to Shopping button. I've had problems like this before. I've checked how I've layed out my div's and they look like they're in line so how do I fix this?