#mn-video-gallery {
    display: grid;
    grid-template-columns: auto auto auto auto;
}

@media only screen and (max-width: 768px) {
    #mn-video-gallery {
        grid-template-columns: auto auto;
    }
}

@media only screen and (max-width: 350px) {
    #mn-video-gallery {
        grid-template-columns: auto;
    }
}