.pano {

  background: #000;
  position: relative;
  overflow: hidden;
    width: 100%;
  max-width: 480px;
  aspect-ratio: 16 / 9;
}

.pano-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  background: rgba(0,0,0,0.6);
  text-align: center;
}

.pano .pnlm-viewer {
  width: 100%;
  height: 100%;
}

.pano.loaded .pano-overlay {
  display: none;
}