html,body,p,h1,h2,h3,h4,h5,h6{margin:0;padding:0}
img{border:0}
div#container{width:841px;margin:0 auto}
div#content{float:left;width:841px}
div#feature{display:none}
div#extra{float:left;width:841px}
div#footer{clear:both;width:100%}

xxdiv#header{background-color:#FF0000}
xdiv#content{background-color:#00FF00 }
xdiv#feature{background-color:#0000FF}
xdiv#extra{background-color:#CCCCCC}
xdiv#footer{background-color:#CCFF00}