Drei Spalten - Schritt6

<style>
body    { margin:9px 9px 0 9px; padding:0px 0px; 
          background:white;}
#ebene0 { background:khaki;}
#ebene1 { margin-left:143px; padding-left:9px; 
          background:white;}
#ebene2 { background:khaki;}
#ebene3 { margin-right:143px; padding-right:9px; 
          background:white;}
#main   { background:white }
#navleiste { background:darkkhaki }
#logoleiste { background:khaki }
</style>
...
<body>
<div id="ebene0">
   <div id="ebene1">
      <div id="ebene2">
         <div id="ebene3">
            <div id="main">
              Hier spielt die Musik.
            </div>
         </div>
      </div>
   </div>
</div>
</body>