.dtv_list_header,
    .dtv_list_footer,
    .dtv_list_middle {
        height: 500px;
        margin-top: 35px;
        border-top: 1px solid #ccc;
        border-bottom: 1px solid #ccc;
    }

    .dtv_list_middle {
        margin-top: 35px;
    }

    .dtv_list_footer {
        margin-top: 35px;
    }

    .dtv_list_left ul {
        height: 488px;
        overflow: hidden;
    }


    .dtv_list_left {
        width: 370px;
        height: 100%;
    }

    .dtv_list_header .dtv_list_right .dtv_list_right_content {
        width: 385px;
        height: 243px;
    }


    /* 左边 */
    .dtv_list_header .dtv_list_left,
    .dtv_list_footer .dtv_list_left,
    .dtv_list_middle .dtv_list_left {
        position: relative;
        width: 770px;
        height: 100%;
        box-sizing: border-box;
        border-right: 1px solid #ccc;
        display: flex;
        align-items: center;
        float: left;
    }

    .dtv_list_middle .dtv_list_left {
        border-right: none;
    }

    .dtv_list_header .dtv_list_left ul,
    .dtv_list_footer .dtv_list_left ul,
    .dtv_list_middle .dtv_list_left ul {
        flex-shrink: 0;
        width: 724px;
        height: 451px;
        overflow: hidden;
    }

    .dtv_list_middle .dtv_list_left ul {
        position: absolute;
        right: 0px;
    }

    .dtv_list_header .dtv_list_left ul li img,
    .dtv_list_footer .dtv_list_left ul li img,
    .dtv_list_middle .dtv_list_left ul li img {
        width: 100%;
        height: 100%;
    }


    /* 右边样式 */
    .dtv_list_header .dtv_list_right,
    .dtv_list_footer .dtv_list_right,
    .dtv_list_middle .dtv_list_right {
        position: relative;
        width: 430px;
        height: 100%;
        box-sizing: border-box;
        float: left;
    }

    .dtv_list_middle .dtv_list_right {
        border-right: 1px solid #ccc;
    }


    .dtv_list_header .dtv_list_right .dtv_list_right_content,
    .dtv_list_footer .dtv_list_right .dtv_list_right_content,
    .dtv_list_middle .dtv_list_right .dtv_list_right_content {
        width: 385px;
        height: 243px;
        /* border: 1px solid black;     */
        position: absolute;
        right: 0px;
        top: 50%;
        transform: translateY(-50%);
        overflow: hidden;
    }

    .dtv_list_middle .dtv_list_right .dtv_list_right_content {
        left: 0px;
    }

    .dtv_list_header .dtv_list_right .dtv_list_right_content ul,
    .dtv_list_footer .dtv_list_right .dtv_list_right_content ul,
    .dtv_list_middle .dtv_list_right .dtv_list_right_content ul {
        position: absolute;
        top: 0px;
        width: 100%;
        transition: top 0.5s linear 0s;
    }

    .dtv_list_header .dtv_list_right .dtv_list_right_content ul li,
    .dtv_list_footer .dtv_list_right .dtv_list_right_content ul li,
    .dtv_list_middle .dtv_list_right .dtv_list_right_content ul li {
        width: 100%;
        /* height: 243px; */
    }

    .dtv_list_header .dtv_list_right .dtv_list_right_content ul li img,
    .dtv_list_footer .dtv_list_right .dtv_list_right_content ul li img,
    .dtv_list_middle .dtv_list_right .dtv_list_right_content ul li img {
        width: 100%;
        height: 100%;
    }

    .dtv_list_header .dtv_list_right .dtv_list_up,
    .dtv_list_footer .dtv_list_right .dtv_list_up,
    .dtv_list_middle .dtv_list_right .dtv_list_up {
        width: 30px;
        height: 30px;
        position: absolute;
        top: 40px;
        left: 55%;
        transform: translateX(-50%);
        cursor: pointer;
    }

    .dtv_list_middle .dtv_list_right .dtv_list_up {
        left: 45%;
    }

    .dtv_list_header .dtv_list_right .dtv_list_up img,
    .dtv_list_footer .dtv_list_right .dtv_list_up img,
    .dtv_list_middle .dtv_list_right .dtv_list_up img {
        width: 100%;
        height: 100%;
    }

    .dtv_list_header .dtv_list_right .dtv_list_down,
    .dtv_list_footer .dtv_list_right .dtv_list_down,
    .dtv_list_middle .dtv_list_right .dtv_list_down {
        width: 30px;
        height: 30px;
        position: absolute;
        bottom: 40px;
        left: 55%;
        transform: translateX(-50%);
        cursor: pointer;
    }

    .dtv_list_header .dtv_list_right .dtv_list_text,
    .dtv_list_footer .dtv_list_right .dtv_list_text {
        position: absolute;
        left: 50px;
        bottom: 100px;
        font-size: 13px;
    }

    .dtv_list_middle .dtv_list_right .dtv_list_text {
        position: absolute;
        left: 0px;
        bottom: 100px;
        font-size: 13px;
    }

    .dtv_list_middle .dtv_list_right .dtv_list_down {
        left: 45%;
    }

    .dtv_list_header .dtv_list_right .dtv_list_down img,
    .dtv_list_footer .dtv_list_right .dtv_list_down img,
    .dtv_list_middle .dtv_list_right .dtv_list_down img {
        width: 100%;
        height: 100%;
    }

    .dtv_list_video_list_title {
        line-height: 36px;
        display: block;
        color: #373737;
    }