<div class="categoryListBoxContents" style="width: 16%;">

It's driving me nuts! What determines that width %? And why does it change from page to page?

http://thewerkstatt.com/stattstore/

If you navigate down through VW or Audi, then you'll see how the image spacing jumps from 16%, 20%, 25% to 33%. I want to lock this in so it's always 16%

I've checked my css, and can't find anything that could be causing this. And through the Admin CP I've changed the Categories to List Per Row and have only been able to make it worse with numbers less than 6.

Advice?