.top_bg{
	background-repeat: no-repeat;
	background-image: url(../images/feature/sg_bg.jpg);
	margin: 0 auto;
	background-size: 100%;
	background-attachment: fixed;
	background-size: cover;
}
.body{
	width: 100%;
	overflow-x: hidden;
}
/*本文*/
.contentsarea{
	margin-right: auto;
	margin-left: auto;
	text-align: center;
	width: 1080px;
	position: static;
	background-image: url(url);
}
#logo_o{
	position: absolute;
	top: 57px;
}