* {
  
  background-color: #f5f5f5;
  height:100%;
  margin:0;
  padding:0;
  
}

#center {
  
  background: url(bewerbungsclip.jpg) no-repeat;
  padding:0;
  width:600px; 
  min-height:600px;
  position:absolute;
  top:50%;                  
  left:50%;
  margin:-300px 0 0 -300px;
  
}

* #center {
  
  height:600px;
  
}