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

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

/* Remove sidebars. */
div.leftColumn,
div.rightColumn
{
	display : none !important;
}

/* Expand content. */
div.centerColumn {
	width : 100% !important;
}

/* Remove faux column image now that its useless. */
#doc {
	background-image : none !important;
}

}