.randbg {
	z-index: 0;
	background-attachment: fixed;
	background-image: url(Logo_Main_Duette.jpg);
	background-repeat: no-repeat;
	background-size: cover;
	background-position: center center;
}
.randbg.bg1 {
	background-image: url(Logo_Main_Duette.jpg);
}