header

#header{
margin-left: 200px;
padding: 20px;
width: 900px;
height: 200px;
background-color: #0099CC;}

body{
margin: 0;
padding: 0;
}

#principal{
margin: 0;
padding: 10px;
width: 600px;
height: 1200px;
margin-left: 200px;
background-color: #EEEEEE;
float: left;
}

#secundaria{
margin: 0;
padding: 10px;
width: 300px;
height: 1200px;
margin-left: 820px;
background-color: #666;
float: left;
position: absolute;
}

rodapé!

#rodape{
width: 940px;
height: 200px;
margin: 0;
padding: 0;
background-color: #DFDFDF;
margin-left: 200px;
clear: both;
position: inherit;
}