.content_main {
	position:relative;
	margin: 0 auto;
	padding:0px;
	width:800px;
	overflow:hidden;
	font-family: "MS Pゴシック",平成ゴシック,serif;
	font-size:13pt;
}

/* 左側の設定*/
.left3 {
	margin: 10px;
	width:270px;
	float:left;
}

/* 右側の設定*/
.right3 {
	text-align:left;
	margin: 10px;
	margin-left: 0;
	width:500px;
	float:right;
}

#site_main {
	font-size: 14pt;
}

.site_menu {
	font-size: 14px;
	line-height: 180%;
}