shopping cart not adopting template css

I have a joomla based website that I am experiencing problems with when directed to the secure ssl site for the shopping cart. The secure site loses the template css/layout. The page becomes broken and none of the modules are correctly lined up. The shopping cart still functions, with one exception, you can't select the type of credit card when entering information. I imagine this is due the lack of any css layout. Hopefully this is a simple fix.