* {margin: 0 auto;padding: 0;}
body {width: 100%;position: relative;}
li {list-style: none;}
a {text-decoration: none;}
.clear {zoom:1;}
.clear:after {content:'';display: block;clear: both;}
.content {width: 1100px;margin: 0 auto;}
.fl {float: left;}
.fr {float: right;}

/**
* 服务项目
*/
.pull-left {text-indent: 20px;color: #f1695d;}
.img {margin-top: 160px;}
.security{text-align: center;width: 1100px; position: absolute;top:530px;background: #f0f0f0;padding-bottom: 50px;}
.btn {margin-top: 50px; margin-left: -300px;}
.hall,.inquiry,.calculate {padding: 10px; margin-left: 20px;box-shadow: 2px 2px 2px #888;border-radius: 8px;}
.hall {width: 150px;height: 150px; 
background-image:url('../images/sb/sbdt.gif');} 
.hall img,.inquiry img,.calculate img {margin-top: -20px;}
.hall h3,.inquiry h3,.calculate h3 {color: #fff;margin-top: -10px;}
.inquiry {width: 150px;height: 150px;
background-image:url('../images/sb/sbcx.gif');}
.calculate {width: 150px;height: 150px;background-image:url('../images/sb/sbjs.gif');}