body {
	background-image: url(/content/IMG_5524.jpg);
	background-repeat: no-repeat;
  	background-position: center;
  	background-attachment: fixed; 
	}
#Ebene0 
{ 
	width:100%;
}
#Ebene1
{
	height: 80%;
	width: 50%;
	float: left;
}
#Ebene2
{
	height: 80%;
	width: 50%;
	float: right;
}
#Ebene3
{
	height: 20%;
	width: 100%;
}