Adding space between last sub cat and next main category?

I have tried searching posts for two days and can't find exactly what I am looking for. Here is how my category box looks:
Digital Downloads:
-Albums
-Scrap Kits
-Paper Collections
-Embellishments
-Alpha Sets
Print & Ship:
-Candy Wrappers
-Invitations
-Pillow Boxes
-Tent Favors

I want a space in between "alpha sets" and "Print & Ship" to show that Print & Ship is a different section all together. Where do I change the stylesheet to do that? Everything I have tried puts spaces in between everything in that box and I don't want that. Here is my site link:
http://www.shelbydesignshoppe.com/shoppe/

Thanks so much to anyone who can help with this. It's the last little thing on my list! :smile:

Michelle

Anyone? Bueller....Bueller.....:smile:

Michelle

You can't do that with the stock stylesheet, so far as I know.

Take a look at this mod:

http://www.zen-cart.com/index.php?main_page=product_contrib_info&products_id=609