*{margin: 0; padding :0; list-style: none;      } 

    .switch{position:relative; height: 400px; width:100%; margin: 0 auto; background:#ccc;  margin-top:90px;  }
    .drawer_sw_con {position:relative;  margin: auto; width: 300px; }
    .drawer_sw_con span{ position:absolute;bottom:0;left:0; width:563px;font-size:12px; line-height:25px;color:#FFF; z-index:100; background:#555; text-align:center;}
    .drawer_sw_con span.drawer_sw_tip{ opacity: 0.6; filter: alpha(opacity=60);}
    .switch  div.drawer_sw_item{position:absolute;  width: 300px; height:400px; border-radius:10px;font-size: 14em; font-weight:  bold; font-family:微软雅黑; color: #fff; line-height: 400px; text-align:center;}
    .switch .drawer_sw_btn_r{ color: #444;z-index: 99; text-decoration:none; position: absolute; right: 0; top: 0; display:  block; width: 60px; height:400px; line-height: 400px;  text-align:center; font-family:微软雅黑;  background:rgba(25,233,66,.2);}
    .switch .drawer_sw_btn_l{ color: #444;z-index: 99; text-decoration:none; position: absolute; left: 0; top: 0; display:  block; width: 60px; height:400px; line-height: 400px;  text-align:center; font-family:微软雅黑;  background:rgba(25,233,66,.2);}
    .sw_items_sty1{ background: #ab1;}
    .sw_items_sty2{ background: #df2;}
    .sw_items_sty3{ background: #ac3;}
    .sw_items_sty4{ background: #bd4;}
    .sw_items_sty5{ background: #ce5;}