.top_img{
    width: 100%;
    height: 200px;
    background-color: #ddd;
}

.post_tab{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin: 20px 0;
}

.post_tab_item.active{
    background-color: #376678;
    color: #fff;
}
.post_tab_item{
    width: calc(200px - 10px);
    box-sizing: border-box;
    padding: 10px 0;
    text-align: center;
    background-color: #b7b7b7;
    color: #000;
    margin: 0 10px 10px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.zhixun_ioc{
    display: flex;
    flex-wrap: wrap;
}
.zhixun_left{
    width: 30%;
    margin: 0 1.5% 10px 1.5%;
}

.zhixun_left_img .play_img{
    width: 40px;
    height: 40px;
    position:absolute;
    left:0;
    right:0;
    top:0;
    bottom:0;
    margin:auto;
    z-index: 99;
}
.zhixun_left_img .img{
    width: 100%;
    height: 100%;
}
.zhixun_left_img{
    width: 100%;
    height: 150px;
    position:relative;
    background-color: #000;
}
.zhixun_left_text{
    width: 100%;
    box-sizing: border-box;
    padding: 20px 10px;
    display: inline-block;
    background-color: #ddd;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
}