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

@-moz-document domain("mail.live.com") {

.SideAds, #CustComm_120x60, #SkyscraperContent, #RadAd_Skyscraper
   {display: none !important}

#MainContent {
   margin-right: 0 !important;
   right: 0 !important;} 
}