With the responsive template you can drop many different types of features on your home page. Because you can build and order your features how ever you choose how you create the break between features is up to you. In some cases you may not want a break, or use small feature like the 3 image banner as a break. In other cases you may want to use a border.
Above is an example of 2 features without any borders
Below are 3 different border examples with the same features.
The border below this is the red,
The next border is green
The final border is black