#haupthintergrund
{
    position: fixed;
	background-color: #03A7FF;
	left: 0px;
	top: 0px;
    z-index: 1;
}

#nebenhintergrund
{
    position: absolute;
    background-color: grey;
    left: 0px;
    z-index: 1;
}

#logo{z-index: 3; position: absolute; opacity: 1;}

#logoschwarz{z-index: 2; position: absolute;}