body, h1 { margin:0; padding:0; }
#container { width:980px; }
#header { background-color:#eee; }
#nav { float:left; display:inline; width:240px; background-color:#ddd;}
#article { float:left; display:inline; width:500px; background-color:#ccc; }
#aside { float:left; display:inline; width:240px; background-color:#bbb; }
#footer { clear:left; background-color:#aaa; }