.main-title {
    font-size: 16rem / $remNum;
    line-height: 46rem / $remNum;
    text-align: center;
    color: #000;
}

.video-wrap {
    .layout-item {
        .image-box {
            height: 206rem / $remNum;
        }
        img {
            width: 100%;
            height: 100%;
        }
    }
}