I’ve had a similiar issue like this before and trying to finally get it corrected. If you notice in the js fiddle there seems to be a thicker border above the actions div and I’m trying to find out why there is and there isn’t in the template that I purchased.
Template:http://kansasoutlawwrestling.com/files/templates/admin/peachv1.2/Template/forms.html
EDIT:
I updated my page with the real intended page but look at the actions area and there still is a border on the left and right. Not sure why.
The double border is because of the bottom border of the content div. The div in the template has rule “.box .content.with-actions” applied which says “border-bottom: 0 none;”. The content div in your fiddle doesn’t have that rule so it has a bottom border and also the actions div has a top border hence the thicker line appearance.
The difference is that the content div in the template also has the “with-actions” class while the one in your fiddle doesn’t. Just add that class and the problem disappears.