html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #070505;
}

#reference-host {
  position: fixed;
  inset: 0;
  z-index: 1000;
  overflow: hidden;
  background: #070505;
}

#reference-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #070505;
}

body > .grain,
body > #app {
  display: none !important;
}