.slide_box { width: 100%; position: relative; height: 395px; }
        .slide_box li { height: 395px; position: absolute; width: 100%; list-style: none; }
        .slide_box li a { display: block;height: 395px;  width: 100%; }
        .slide_box .btn-control { bottom: 15px; position: absolute; z-index: 20; left: 0; width: 100%; }
        .slide_box .btn-control .list { width: 1000px; margin: 0 auto; height: 35px; position: relative; }
        .slide_box .btn-control .list em { float: right; height: 35px; display: block; }
        .slide_box .btn-control span { display: block; height: 35px; width: 52px; float: left; margin-left: 8px; padding: 3px; cursor: pointer; position: relative; }
        .slide_box .btn-control span:first-child { margin-left: 0px; }
        .slide_box .btn-control span img { height: 35px; width: 52px; }
        .slide_box .btn-control span i { position: absolute; top: 0px; left: 0px; border: #fff solid 3px; display: block; height: 35px; width: 52px; z-index: 1000; display: none; }
        .slide_box .btn-control span.current i { display: block; }