.container {
    padding-top: 80px;
}

.container .div_list {
    width: 1100px;
    padding-top: 80px;
    margin: 0 auto;
}

.container li {
    float: left;
    width: 320px;
    height: 200px;
    margin-right: 70px;
    margin-bottom: 80px;
}

.div_list li span {
    display: block;
    margin-bottom: 20px;
    font-size: 14px;
    font-family: "微软雅黑";
    font-weight: 600;
    color: #333;
}

.container .mrnone {
    margin-right: 0;
}

.container .div_list video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}