.video-container {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 aspect ratio */
            height: 0;
            overflow: hidden;
            max-width: 100%;
            background-color: #000;
        }
        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: 0;
        }