I am trying to increase the size of my border around my thumbnails from 1px to 3px. When I do this the thumbs drop onto a new line. Not sure why. The container is just set at 100%. And it can expand cause it starts a new line lol

I can't understand it.

Here is my page.


It is the thumbnails underneath the slider I'm talking about. I need the border off the selected thumb to be more prominent so users can see where they are at, at a glance. If I increase it from 1px to 2px or 3px it drops to a new line

I'm sure this isn't as hard as it seems but I've been on the computer working for about 8 hours today and I can't figure this one out so any fresh individual out there please help me!