body {
  padding: 0px;
  margin: 0px;
  overflow: hidden;
  height: 100%;
  width: 100%;
}
#kopf {
  position: absolute;
  height: 15%;
  width: 90%;
  padding: 0;
  margin: 0;
  top:2%;
  left:5%;
  right: 5%
}
#inhalt {
  position: absolute;
  top: 19%;
  left: 20%;
  right: 5%;
  width: 75%;
  height: 79%;
  padding: 0;
  margin: 0;
  background-color:#E3FFF4;
  overflow: auto;
}
#menu {
  position: absolute;
  top: 19%;
  left: 5%;
  width: 15%;
  height: 79%;
  padding: 0;
  margin: 0;
  background-image:url(../Bilder/hintergrund3.jpg); background-repeat:repeat-y;
  overflow: auto;