html{
	min-width: 1900px;
}

.header{
	width: 100%;
	height: 500px;
	background-image: url(../images/tiyan_bj.jpg);
	background-repeat: no-repeat;
	background-size: cover;
}
.nav_ul li a {
    font-size: 16px;
    color: #fff;
}
.lianxi_span{
	color: #fff;
}
.lianxi_num{
	color: #fff;
}
.nav{
	border-bottom: 1px solid rgba(255,255,255,0.2);
}

.lianxi{
	border-left-color: rgba(255,255,255,0.2);
}

.header_con{
	width: 1200px;
	margin:0px auto;
}
.header_item1{
	padding-top: 115px;
}
.header_span2 .span1{
	font-size: 50px;
	color: #ffffff;
}
.header_span2 .span2{
	font-size: 30px;
	color: #ffffff;
	margin-top: 10px;
	margin-left: 20px;
}
.header_span2 .span3{
	width: 100px;
	height: 1px;
	background-color: #fff;
	margin-left: 20px;
	margin-top: 30px;
}
.header_span2{
	margin-top: 35px;
}
.header_span4{
	margin-top: 35px;
	max-width: 550px;
	font-size: 14.19px;
	color: #ffffff;
	line-height: 1.8;
}
.header_item2{
	margin-top: 275px;
}
.header_span5{
	font-size: 14.19px;
	color: #ffffff;
}

.main{
	width: 100%;
	background-color: #f0f0f0;
}
.main_con{
	width:1600px;
	margin:0px auto;
	padding-bottom: 50px;
}

.item_box{
	margin-right: -50px;
	padding-top: 100px;
}
.item_box .item{
	float: left;
	width: 500px;
	height: 290px;
	background-color: #fff;
	text-align: center;
	margin-right: 50px;
	margin-bottom: 50px;
	transition: .2s linear all;
}

.item_div{
	margin-top: 100px;
}

.item_logo{
	margin-left: 190px;
	width: 36px;
	height: 36px;
	border:1px solid #ef0116;
	text-align: center;
}
.item_logo img{
	margin-top:6px
}
.img2{
	display: none;
}
.item_detail{
	padding:0 10px;
	border-bottom:1px solid #ef0116;
	padding-bottom: px;
}
.item_span{
	font-size: 16px;
	color: #333333;
}
.item_ese{
	font-size: 14px;
	color: #333333;
}

.item_icon{
	margin-top: 100px;
}
.item:hover{
	background-color: #ef0116;
}
.item:hover .img1{
	display: none;
}
.item:hover .img2{
	display: inline;
}
.item:hover .item_logo{
	border-color: #fff;
}
.item:hover .item_detail{
	border-bottom-color: #fff;
}
.item:hover .item_span{
	color: #fff;
}
.item:hover .item_ese{
	color: #fff;
}