.responsive-panorama {
  position: relative;
  padding-bottom: 56.25%;
  /* 16:9 */
  height: 0;
}
.responsive-panorama iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100%;
  border: none;
  margin: 0 !important;
}