I recently switched to Wordpress. Now I am trying to convert all of my previously PHP pages to Wordpress pages but I'm having a few issues. The oages are all fine, except for any page that has a display ad on it. They all merge with the footer and don't stay in place. It's almost as if Wordpress is not accepting the css for my display ads. They worked just fine before so I'm not sure what the problem is.

Some examples of this error include the following pages:

http://vivid-avenue.net/site/link-me/

http://vivid-avenue.net/advertising/

http://vivid-avenue.net/contents/

My site, obviously, is http://vivid-avenue.net

Help please!