.clear{clear:both;}
#wrapper{width:898px;height:598px;border:1px solid brown;background:cyan;}

#header{width:100%;border-bottom:1px solid black;height:90px;background:pink;}

#content{width:100%;}

#one{width:299px;float:left;height:400px;background:red;}
#two{width:298px;float:left;height:400px;background:green;border-left:1px solid blue;border-right:1px solid purple;}
#three{width:299px;float:left;height:400px;background:yellow;}

#footer{border-top:1px solid cyan;height:108px;background:pink;}