.concept_left {
	width: 320px;
	float:left;
	font-size: 12px;
	line-height: 150%;
	}

.concept_right {
	width: 265px;
	height: 209px;
	float:right;
	margin-top: 20px;
	}

.big_box {
	width: 618px;
	background:url(../img/about_bg02.gif) repeat-y;
	}

.box_left {
	width: 272px;
	float: left;
	margin-left: 10px;
	margin-top: 10px;
	}

.box_right {
	width: 300px;
	float: left;
	margin-left: 20px;
	margin-top: 10px;
	}

.about_box01 {
	width: 298px;
	float:left;
	}

.about_box02 {
	width: 298px;
	float:right;
	}

.about_waku {
	width: 298px;
	background:url(../img/about_bg.gif) repeat-y;
	}