Check out the post below, it should have more information about how to change the widths of those boxes (and info on an upcoming update to the SCLogin module):
http://www.sourcecoast.com/forums/jfbco … ide#p32067
Hope that helps, but if not, let us know.
Things look right on your page when I go to it, but I'm seeing the module in the left-hand side. If you're still having issues, please make sure you clear the Joomla cache after you update the CSS. If that still doesn't help, definitely let us know and we'll help however we can.