Is something preventing you from either modifying the CSS of the classes already applied (presumably in an external stylesheet), or creating a new class that applies the styles you require?
The frame around the facebook text is too close so I would like to add more padding.
The popup displays a php widget, so I can put html in there. It also has a shortcode that brings in the facebook Like button and border. But I can’t and don’t want to edit the css of the classes because it will be used in other parts of the site in a different way.
On that page I can see “Popup test Written by Jon on August 16, 2011 Any old text.” but no sign of any functioning pop up, Facebook Like button or the HTML markup shown in your first post.