body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.video-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.video-item {
    width: 100%;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.aspect-ratio-16-9 {
    padding-top: 56.25%;
    position: relative;
}

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

.video-title {
    font-size: 14px;
    margin-top: 5px;
}

@media screen and (min-width: 601px) {
    .video-container {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .video-item {
        width: 45%;
        margin: 2.5%;
    }
}