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

@-moz-document url-prefix(http://blog.nikkeibp.co.jp/pconline/) {
 #right,
 #left,
 #gnav200603,
 iframe{
  display:none !important;
 }

 #center,
 *[width="520"]{
  width:100% !important;
 }
 
 #main{
  float:left !important;
  margin-left:30px !important;
 }
 
 .bread_link{
  background-image:url("http://pc.nikkeibp.co.jp/pc/images/head/logo.gif") !important;
  background-repeat:no-repeat !important;
  margin-top:30px !important;
  padding-top:80px !important;
 }
}