.bannerbox_zentrieren {
	margin-left: auto;
	margin-right:auto;
	height: 300px;
	width: 650px;
	text-align:center;
}

.banner1 {
	height: 80px;
	width: 510px;
	text-align: center;
	padding: 2px;
	margin-bottom: 10px;
	margin-left: auto;
	margin-right:auto;
}
.banner2 {
	height: 80px;
	width: 510px;
	text-align: center;
	padding: 2px;
	margin-bottom: 10px;
	margin-left: auto;
	margin-right:auto;
}