.youtube-playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
}

.youtube-playlist-grid .video {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.youtube-playlist-grid .video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}