#main_contents {
	width: 720px;
	margin-right: auto;
	margin-left: auto;
}
#main_contents h1 {
	text-align: center;
	margin-top: 20px;
	margin-bottom: 20px;
}

#main_contents p {
	margin-top: 40px;
	margin-bottom: 40px;
}
#main_contents ul.illust {
	width: 500px;
	margin-left: 20px;
	float: left;
	display: inline;
}
#main_contents ul.illust li {
	float: left;
	margin-right: 15px;
	margin-bottom: 40px;
	margin-left: 15px;
	display: inline;
}
#main_contents ul.back_number {
	width: 190px;
	float: right;
}
#main_contents ul.back_number li h2 {
	text-align: center;
	font-size: 14px;
	padding-top: 5px;
	padding-bottom: 5px;
	font-weight: bold;
	color: #009900;
}
#main_contents ul.back_number li a {
	display: block;
	text-align: center;
	font-size: 14px;
	text-decoration: none;
	background: url(../image/illust_green.gif) no-repeat left top;
	height: 14px;
	margin-bottom: 20px;
	padding-left: 16px;
	margin-top: 20px;
}
#main_contents ul.back_number li a:hover {
	background: url(../image/illust_green.gif) no-repeat left bottom;
	color: #FFCD79;

}
#main_contents ul.back_number li.last a {
	border-style: none;
}