#guestbook {
	height: auto;
	width: 700px;
	margin-right: auto;
	margin-left: auto;
}
#container #header {
	width: 800px;
	margin-right: auto;
	margin-left: auto;
}
#container {
	margin-right: auto;
	margin-left: auto;
	width: 800px;
}