Add Space in Products

I am new to Zen Cart..
So forgive me if I don't explain this well.
I am starting with the classic template.
When you click on a catagory you then get to see all the products in that catagory.
I have 2 dummy products in there but they are sitting on top of each other. What do I change to add some space between products?

Can you post the URL of your site?

I found where to add padding in the css to make it work.
Thanks!