.box_1{
	width: 80%;
	margin-top: 2rem;
	margin: 2rem 5% 2rem 2%;
}
.box_1 img{
	width: 90%;
}
.box_2{
	width:75%;
		margin-top: 2rem;
		margin: 2rem 5% 2rem 2%;
}
.box_3{
	width: 80%;
		margin: 2rem 5% 2rem 2%;
		
}
.dj_zw{
	background-color: #FFFFFF;
}
.dj_zw h2{
	padding-top: 1rem;
	margin-left: 2.5%;
}
.sj{
	text-align: center;
	font-size: 1.5rem;
	color: #b9b9b9;
	margin-top: 2rem;
}
.ys{
	overflow: hidden;
}
.ys ul li{
	float: left;
	width: 45%;
	margin: 0 auto;
	margin:1rem 2.5%;
	font-size: 1.2rem;
}
.ys ul li img{
	display: inline;
	width: 5%;
	margin-left: 5%;
}
nav {
	overflow: hidden;
	background-color: #FFFFFF;
}
nav ul li{
	float: left;
	background-color: coral;
	height: 3rem;
	line-height: 3rem;
	width: 20%;
	color: #FFFFFF;
	text-align: center;
	border-radius: 0.5rem;
	margin:1rem 2.5% ;
	font-size: 1.2rem;
	
}
nav ul li a{
	display: block;
	color: #FFFFFF;
}
.logo_box{
	width: 80%;
	margin: 0 auto;
	padding: 1rem 0;
}
.logo_bg{
	background-color: #FFFFFF;
}