.video-box {
    width: 200px;
    height: 220px;
    margin: 0 25px 20px 0px;
}
@media only screen and (max-width: 575px) {
    .row{
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .video-box {
        text-align: center;
        width: 200px;
        height: 220px;
        margin-bottom: 20px;
    }
}