body {
    background: url(/static/images/beij.jpg) center center;
    background-repeat: no-repeat;
    padding: 0;
    /*background-size: cover;*/
    margin: 0;
    font-family: Arial, "Microsoft Yahei";
    min-height: 100%;
    width: 100%;
    overflow: hidden;
}


.wrap {
    /*margin-top: 180px;*/
    width:100%;
    
}