How to remove table lines from Edocman modules?

I'm pretty new at all this, so this may be a noob question. I recently purchased and installed EDocman and had great success with the install. I created a few modules showing Top Downloads and Search for example which worked just fine. I noticed when I few the modules on my production site there are table lines around the Search Field, Choose Category, and Search Button. I don't seen any options to turn off the formatting of the table to not show the lines. Is this someplace in the extension configuration? Joomla someplace? or do I need to edit a CSS file? I would like mine to look similar to the demo site Most Popular and Top Download modules look.

joomdonationdemo.com/edocman/default-layout-demo

Any advice on pointing me in the right direction would be greatly appreciated!