#viewport-container:fullscreen {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    max-height: 100vh !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
  }
  #viewport-container:-webkit-full-screen {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    max-height: 100vh !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
  }