/* 
* @Author: LDF QQ 47121862
* @Date:   2014-05-16 17:33:15
* @Last Modified by:   LDF QQ 47121862
* @Last Modified time: 2014-05-23 22:51:32
*/
body{background: #ddd;}
h1{text-align: center;}
#s1,#s2,#s3,#s4{/* border:5px solid #fff;*/ margin:0 auto; position: relative;}
#s1 .pic a,#s2 .pic a,#s3 .pic a,#s4 .pic a{ /*display:none; position: absolute; */}
#s1 .pic{
    display: flex;
    align-items: center;height: 460px;
}
#s1,#s1 .pic img{ width:840px}
#s2,#s2 .pic img{ width:500px;height: 333px;}
#s3,#s3 .pic img{ width:500px;height: 333px;}
#s4,#s4 .pic img{ width:600px;height: 333px;}