@charset "utf-8";
/*****************   banner CSS  **********************/

.tab_all{width: 500px;height: 400px;background: #369;margin:0px auto;position:relative;}
.tab_btn{width: 100%;position:absolute;bottom:20px;left:0;z-index:999;}
.tab_btn .btn_m{margin:0 auto;}
.tab_btn .btn{width: 12px;height: 12px;border-radius:100%;float:left;background: #fff;margin-left:10px;cursor:pointer;}
.btn_active{background:none !important;border:2px solid #000;width:8px !important;height:8px !important;}
.btn_l{position:absolute;top:50%;left:-40px;width: 40px;height: 40px;font-size:30px;line-height: 40px;color:#666;text-align: center;cursor:pointer;z-index: 999999999}
.btn_r{position:absolute;top:50%;right:-40px;width: 40px;height: 40px;font-size:30px;line-height: 40px;color:#666;text-align: center;cursor:pointer;z-index: 999999999}
.tab_main{height: 400px;overflow:hidden;width: 100%;position:relative;}
.tab_main .box_mm{height:100%;position:absolute;top:0;left:0;}
.tab_main .box_mm img{width:100%;height:100%;}
.tab_main .box{float:left;width:100%;height:100%;overflow:hidden;}