body{
	min-width: 1000px;
}
.box{
	width: 100%;
	height:2200px;
	/*border: 1px solid crimson;*/
		}
.top{
	width: 1200px;
	height: 86px;
	background-color:white;
	margin: 0 auto;
}
.top_left{
	width: 288px;
	height: 86px;
	/*background-color: goldenrod;*/
	float: left;
}
.top_left>img{
	margin-top: 20px;
				}
.top_right{
	width: 870px;
	height: 86px;
	/*background-color: darkcyan;*/
	float: right;
}
.top_lan{
				display: inline-block;
				width: calc(100%/5 - 100px);
				line-height: 50px;
				text-align: center;
				margin-top: 15px;


				/*border-bottom: 1px dashed whitesmoke;*/
			}
.top_right>div:nth-child(2){
			/*background-color:rgba(255,255,255,0.5);*/
				border-bottom: 3px solid #2587e9;
				color: #2587e9;
			   
			}
.top_right>div:nth-child(n+2){
				margin-left: 6%;
			}
.top_right>div:hover{
				border-bottom: 3px solid #2587e9;
				color: #2587e9;
				cursor: pointer;
			}
	/*下拉框*/		
.dropdown {
    position: relative;
    display: inline-block;
    height: 35px;
    /*background-color: red;*/
   /*position:absolute;*/
}
/*下拉框内容*/
.dropdown-content {
    display: none;
    position: absolute;
    background-color:#2587e9 ;
    border: 2px solid white;
    min-width: 170px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
   margin-top:16px;
  border-radius:4px ;
   z-index:9999;
  
}

.dropdown-content a {
    color:white;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {background-color:#5ba3eb}

.dropdown:hover .dropdown-content {
    display: block;
}


.banner{
	width: 100%;
	height: 270px;
	background-image: url(../img/sifa_ban.png);
}
/*互联网/云计算/大数据标题*/
.data{
	width: 1200px;
	height: 50px;
	/*background-color: palevioletred;*/
	margin: 0px auto;
	font-size: 30px;
	color: #323232;
}
.data_lan{
	width: 1200px;
	height: 40px;
	/*background-color: palevioletred;*/
	margin: 0px auto;
}

.data_lan div{
	width: 400px;
	height: 40px;
	/*background-color: #5BA3EB;*/
}
.data_lan a{
	font-size: 16px;
	color: #323232;
	text-decoration: none;
}
.data_lan span{
	display: block;
	width:110px;
	height: 40px;
	float: left;
	margin-right: 10px;
	background-color:#eeeeee;
	text-align: center;
	line-height: 40px;
	border-top-right-radius:1em;
	border-bottom-left-radius: 1em;
}
.data_lan span:nth-child(2){
	background-color: #2587e9;
	color: white;
}
			
/*底部栏*/
.bot{
   width: 100%;
   height:120px;
   background-color:#313131;
   /*margin-bottom: 10px;*/
}
.bot_up{
	width:724px;
	height:60px;
	/*background-color: deepskyblue;*/
	/*border: 1px solid orangered;*/
	margin: 0px auto;
}
.bot_up_left{
	width: 462px;
	height: 60px;
	/*background-color: teal;*/
	float: left;
	
}
.bot_up_left span{
	display: block;
	width:calc(100%/5 - 4px);
	/*background-color: royalblue;*/
	/*border: 1px solid salmon;*/
	float: left;
	text-align: center;
	color: #969696;
	font-size: 12px;
margin-top: 23px;
}
.bot_up_left a{
	color: #969696;
	text-decoration: none;
}
.bot_up_left>span:nth-child(1),.bot_up_left>span:nth-child(2),.bot_up_left>span:nth-child(3),.bot_up_left>span:nth-child(4){
	border-right: 1px solid #969696;
}
.bot_up_right{
	width:262px;
	height: 60px;
	/*background-color:green;*/
	float: right;
text-align: center;
font-size: 12px;
color: #969696;
line-height: 60px;
}
.bot_down{
	width: 724px;
	height: 20px;
	background-image: url(../img/bot_down.png);
	margin: 0px auto;
	background-repeat: no-repeat;
}