#contents_bg {
	background-image: url(images/bg02.jpg);
	clear: both;
}
#main_bg {
	background-image: url(images/bg01.png);
	background-repeat: no-repeat;
	background-position: left top;
	height: 551px;
}
#contents {
	width: 640px;
	margin-right: auto;
	margin-left: auto;
	padding-top: 30px;
}