@namespace url(http://www.w3.org/1999/xhtml);

/* Removes the Sidebar on Mozillazine Forums */
@-moz-document url-prefix(http://forums.mozillazine.org/),
               url-prefix(http://forums.mozillazine.org/index.php) {
  table[class="supportHeader"][align="center"] {
    display: none !important;
  }
}

/* Removes the Sidebar on Mozillazine Forums */
@-moz-document url-prefix(http://forums.mozillazine.org/viewtopic.php),
               url-prefix(http://forums.mozillazine.org/viewforum.php),
               url-prefix(http://forums.mozillazine.org/search.php),
               url-prefix(http://forums.mozillazine.org/posting.php) {
  td[valign="top"][id="sidebar"] {
    display: none !important;
  }
}