body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    margin: 0;
    background-color: #f0f2f5;
    color: #1c1e21;
}

.video-wrapper {
    position: relative;
    overflow: hidden;
    width: 100%;
    /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */
    padding-top: 56.25%; 
    background-color: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.content {
    padding: 20px;
    text-align: center;
}