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

@-moz-document domain("scientificamerican.com") {

#content_a
{ 
 margin:0px !important;
 width:auto !important;

}


#main {
 background:none !important;
 margin:0px;
 padding:0px;
}

div.b[ style="background-color: rgb(255, 255, 255);"],
div[ style="width: 270px; float: left;"],
div.clearfix[ style="border-top: 1px solid rgb(204, 204, 204); height: 158px; text-align: center; margin-top: 17px; padding-top: 10px; color: rgb(204, 204, 204);"],
.halfhorizontallines,
form, 
#footer,
#credits,
#scientific-american,
#content_b,
#header,
#discuss,
.discuss_h2,
#google,
#further-reading,
#sharetools,
.also-in-this,
.float_right,
.further-reading_h2,
#FLASH_AD
{display:none !important}

}