allora questo è il mio css:

<style type="text/css">
<!--
#body{
widht:700;

border:1px solid #999;


}
#logo {
widht:180;
height:500;
background:#ffffff;
float: left;
border:1px solid #999;
}
#bannerup {
widht:500;
height:60;
background:#ffffff;
border:1px solid #999;
float:left;
}
#menu {
widht:500;
height:70;
background:#ffffff;
border:1px solid #999;
float:left;
}

</style>