#hauptfenster {
	background-color: #3366CC;
	width: 800px;
	margin-right: auto;
	margin-left: auto;
}
.rand {
	border-top-color: #330099;
	border-right-color: #330099;
	border-bottom-color: #330099;
	border-left-color: #330099;
	border-top-style: double;
	border-right-style: double;
	border-bottom-style: double;
	border-left-style: double;
}