#bottom_layer {
    color: #000;
    font-size: 12px;
    font-family: "PingFang SC", Arial, "Microsoft YaHei", sans-serif;
    list-style: none;
    width: 100%;
    position: fixed;
    z-index: 302;
    bottom: 0;
    left: 0;
    height: 40px;
    overflow: hidden;
    zoom: 1;
    margin: 0;
    text-align: left;
    line-height: 20px;
}

#bottom_dl_layer {
    color: #000;
    font-size: 14px;
    font-family: "PingFang SC", Arial, "Microsoft YaHei", sans-serif;
    list-style: none;
    width: 100%;
    position: fixed;
    z-index: 408;
    /* bottom: 20px; */
    top: 0;
    left: 12px;
    height: 40px;
    overflow: hidden;
    zoom: 1;
    margin: 0;
    text-align: left;
    line-height: 20px;
}