.responsive-embed-container {
    position: absolute;
    height: 100%;
    overflow: hidden;
    /* padding-bottom: 56.25%; For a 16:9 aspect ratio (9/16 * 100%) */
    width: 100%;
    top: 0;
    left: 0;
    z-index: 100;
}

.responsive-embed-container iframe, .responsive-embed-container video {
    position: absolute; /* Allows the iframe to fill the container */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 1px;
}