.dingwei{
	background:#ffffff;
	height:533px;
	min-width:1200px;
}
.dingwei .main{
	width:1200px;
	height:100%;
	margin:auto;
}
.dingwei .main_head{
	height:220px;
	width:1200px;
	margin:auto;
}
.dingwei .main_body{
	height:313px;
	width:1200px;
	margin:auto;
}
.dingwei .main_body .main_body_nr{
	float:left;
	width:25%;
	height:313px;
}