.nav .nav-sub {
    width: 100%;
    /*margin: 0 auto;*/
    position: relative;
    z-index: 1000;
    display:none;
    filter:Alpha(opacity=50);
}


.nav-sub .nav-box {
   background: #E9E9E9;
     min-height: 170px; 
    /*border: 2px solid #3377c6;*/
    border-top: none;
    box-sizing: border-box;
    padding: 15px;
    position: absolute;
    z-index: 200;
        width: 100%;
    margin-top: 45px;
overflow: hidden;

}


.nav-sub  .nav-box_content{
    width:60%;height:100%;float:left;margin-left:4%;
}
.nav-sub  .nav-box_tab{
       display: inline-block;
    margin-right: 3%;
    float: left;
    color: #90000C;
    font-size: 15px;
    margin-bottom: 10px;
    cursor: pointer;
    width: 22%;
    border-bottom: 2px solid #90000C;
    position: relative;
    text-indent: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-sub  .nav-box_img {
        width: 28%;
    height: 100%;
    float: left;
    text-align: center;
    margin-left: 3%;
}

.nav-sub  .nav-box_img img{ width: 355px; height: 140px; margin: 10px auto;}

.nav .nav_bt_tilte  .active{
    background-color:#ccc;
    color:#8f000b;
    border-top:4px solid #8f000b;
    height: 45px;
    line-height: 38px;
}
.nav .nav_bt_tilte  .active a{
    color:#fff;
}
 

 .lb_title {
            position: absolute;
            height: 50px;
            bottom: 52px;
            left: 10%;
            background: rgba(0,0,0,0.2);
            color: #fff;
            font-size: 20px;
            text-align: left;
            padding-left: 20px;
            padding-right: 20px;
            line-height: 50px;
            max-width: 700px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

.flickity-prev-next-button.next {
outline:none;
}
.flickity-prev-next-button.previous {
outline:none;
}
.nav-sub  .nav-box_tab:before {
      width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-left: 8px solid #90000C;
    border-bottom: 4px solid transparent;
    content: "";
    position: absolute;
    top: 18px;
    left: 0px;
}