.web_choose{ width:100%; margin:auto; margin-top:60px;}
.web_width {
	width: 1200px;
	min-width: 1200px;
	margin: auto;
}
.choose_bt{ font-size:24px; color:#333; font-weight:500}	
.choose_bt>span{ font-size:18px; color:#666; margin-left:20px;}		
.choose_ul{ width:100%; overflow:hidden; margin-top:20px;margin-bottom:50px;}	 
.choose_li{ width:20%; display:block; float:left; height:145px; overflow: hidden;}
.choose_div{padding:10px; position:relative}
.choose_div>i{ background: url(images/feature_icon.png) no-repeat; width:84px; height:52px; display:block; margin:auto; position:absolute; top:20; left:35% } 
.choose_div>p{ font-size:18px; color:#333; text-align:center; margin:70px 0; margin-bottom:10px }
.choose_div>span{ font-size:14px; color:#666; display:block; margin:auto; text-align:center}
.choose_div .choose_a{ background-position:-20px -20px}
.node_map{ background: url(images/node_map.png) no-repeat; width:1280px; height:1280px; display:none}
.choose_div .choose_b{ width:30px; background-position:-143px -20px; left:45%}
.choose_div .choose_c{width:62px; background-position:-212px -20px; left:38%}
.choose_div .choose_d{width:40px; background-position:-314px -20px; left:40%}
.choose_div .choose_e{ width:58px;background-position:-393px -20px; }
.choose_li:hover .choose_div i{ animation:choose 1s ease}
@keyframes choose{0%{margin-top:-8px; }
					60%{ margin-top:8px;}
					100%{marggin-top:0px}
	}