/* Add this to assets/css/style.css for responsive maps */
.map-responsive {
    overflow: hidden;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    position: relative;
    height: 0;
}
.map-responsive iframe {
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    position: absolute;
}