I'm trying to debug my theme since it seems that it won't parse any shortcodes. I'd like to understand how shortcodes work, as in, how they are linked with CSS. My error started after I was fiddling with the formatting of one post (headings). Before this the shortcodes were working fine (I was only using a basic one for column layouting), but now it seems to be confused and not render any shortcode whatsoever. I'm running the Simplicity theme by the way.
Thanks a lot.