.video_box_item_bottom{
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    box-sizing: border-box;
}
.video_yuan{
    animation: spin 2s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.video_content{
    width: 90%;
    margin: 0 auto;
}
.video_content>video{
    width: 100%;
    height: auto;
}

@media only screen and (max-width: 768px){
    .video{
        width: 100%;
        height: 100%;
        box-sizing: border-box;
    }
    .video_box{
        width: 100%;
    }
    .video_box{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        column-gap: 1rem;
        row-gap: 0.72rem;
    }
    .video_box_item{
        width: 6.42rem;
        height: 5.08rem;
        background: #FFFFFF;
        box-shadow: 0px 0.04rem 0.12rem 0.04rem rgba(7,7,7,0.25);
    }
    .video_box_item_top{
        width: 100%;
        height: 3.96rem;;
        background: url('../img/index/img.png') no-repeat;
        background-size: 100% 100%;
    }
    .video_box_item_top_box{
        cursor: pointer;
        width: 100%;
        height: 100%;
        background: rgba(30, 36, 40, .6);
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }
    .video_yuan{
        width: 1.36rem;
        height: 1.36rem;
    }
    .video_start{
        border-style: solid;
        border-width: 0.26rem 0 0.26rem 0.46rem;
        border-color: transparent transparent transparent #fff;
        position: absolute;
        margin-left:0.16rem;
    }
    .video_box_item_bottom{
        width: 100%;
        padding: 0.28rem  0.36rem 0 0.36rem;
        font-weight: 300;
        font-size: 0.44rem;
        color: #434444;
        line-height: 17px;
        -webkit-line-clamp: 1;
    }
    .page{
        margin-top: 1.56rem;
    }
    .el-dialog{
        width: 90%;
    }
    .video_content{
        width: 100%;
    }
}
@media only screen and (min-width: 800px){
    .video{
        width: 100%;
        height: 100%;
        box-sizing: border-box;
    }
    .all_content_bottom{
        width: 100%;
        height: 100%;
        padding-left: 72px;
        box-sizing: border-box;
    }
    .video_box{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        column-gap: 10px;
        row-gap: 20px;
    }
    .video_box_item{
        width: 324px;
        height: 279px;
        background: #FFFFFF;
        box-shadow: 0px 2px 6px 2px rgba(7,7,7,0.25);
    }
    .video_box_item_top{
        width: 100%;
        height: 200px;
        background: url('../img/index/img.png') no-repeat;
        background-size: 100% 100%;
    }
    .video_box_item_top_box{
        cursor: pointer;
        width: 100%;
        height: 100%;
        background: rgba(30, 36, 40, .4);
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }
    .video_yuan{
        width: 84px;
        height: 83px;
    }
    .video_start{
        border-style: solid;
        border-width: 16px 0 16px 28px;
        border-color: transparent transparent transparent #fff;
        position: absolute;
        margin-left: 5px;
    }
    .video_box_item_bottom{
        width: 100%;
        padding: 17px  18px 0 18px;
        font-weight: 300;
        font-size: 18px;
        color: #434444;
        line-height: 24px;

    }
}