/* CSS Document */

 .btn1{-webkit-border-radius:3px;-moz-border-radius:3px;-ms-border-radius:3px;-o-border-radius:3px;border-radius:3px;
                 background-color: #ff8400;color: #fff;display: inline-block;height: 28px;line-height: 28px;text-align: center;
                 width: 72px;transition: background-color 0.2s linear 0s;border:none;cursor:pointer;margin:0 0 20px;}
            .demo{width:700px;margin:0 auto}
            .btn:hover{background-color: #e95a00;text-decoration: none}
            .ul_pics li{float:left;width:160px;height:160px;border:1px solid #ddd;padding:2px;text-align: center;margin:0 5px 5px 0;}
            .ul_pics li .img{width: 160px;height: 140px;display: table-cell;vertical-align: middle;}
            .ul_pics li img{max-width: 160px;max-height: 140px;vertical-align: middle;}
            .progress{position:relative;padding: 1px; border-radius:3px; margin:60px 0 0 0;} 
            .bar {background-color: green; display:block; width:0%; height:20px; border-radius:3px; } 
            .percent{position:absolute; height:20px; display:inline-block;top:3px; left:2%; color:#fff } 