Firefox (V25 on Mac) thinks https://www.jboss.org/migration/ is not secure. A security alert pops up and the page comes without stylesheet, looking broken.

The reason for blocking is explained here:
https://support.mozilla.org/en-US/kb/how-does-content-isnt-secure-affect-my-safety?as=u&utm_source=inproduct

In a nutshell, the location of static images and stylesheets seem to be hardcoded to "http://....." - probably across other jboss.org pages as well.