/* Wrapper to maintain aspect ratio */
.responsive-iframe-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* Aspect ratio Example: 16:9 */
    height: 0;
    overflow: hidden;
}

.responsive-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}