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

@-moz-document url-prefix(http://blog.livedoor.jp/dankogai/) {
 .HRG,
 .sidetitle,
 .side,
 .pagetop,
 .description{
  display:none !important;
 }
 #content{
  margin:2em !important;
  top:auto !important;
  left:auto !important;
 }
 #links,
 #content{
  position:static !important;
  float:left !important;
 }
}