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

@-moz-document url-prefix("http://www.atmarkit.co.jp/") {
div#wrap #header .ad
, div.rmcrbnr
, div.rspecial
, div.mcrbanner
, div#oshirase
, div#kyujin
, div.special
, div#midltxt
, div embed
, div#ttl-techtarget
{ display:none !important; }

body{ background-image: none !important; }
div#wrap{ margin: 0 auto !important; }

}

@-moz-document url-prefix("http://www.atmarkit.co.jp/f") {

div#header_ad
, div#rightcol
, div#frec
, div#headmenu
, div#leftcol
, div.btmlist
, div.sinchaku_ttl
, div.sinchaku_cont1
, img[width="370"][height="50"]
, table td[bgcolor="#eeeeee"] table
{ display:none !important; }

div#centercol
{ width:100% !important; }

body
, #main
{ background-image:none !important; }

}