* {
 margin:0;
 padding:0;
}

html , body {
 height:100%;
 width:100%;
}

body {
 width:960px;
 margin:0 auto;
 }
.wrapper { 
  display:table; 
  border-collapse:collapse; 
  background:#aaa;
 margin-bottom:20px;
} 

.kopf {
 position:relative;
 top:0;
 width:100%;
 height:100px;
 background:#dad;
}
.links { 
  display: table-cell; 
  background:#ada; 
} 

.rechts { 
  display:table-cell; 
  padding-right:.1px;
 
} 

.mitte { 
  display:table-cell; 
  width:100%; 
  background:#09c;
  padding:5px;
}