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