[Plugin: Accordion Shortcode] Themeroller CSS not working

I downloaded a theme from Themeroller and can’t get it to work. I’ve added your sample css to the same css and can see it. What am I missing?
Site is:
http://66.147.244.62/~busingm3/plretirees/retirees/newly-retired/
thanks for any poiters.

http://wordpress.org/extend/plugins/accordion-shortcode/