html, body, iframe {
  margin: 0;
  padding: 0;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  height: 100%;
  z-index: 2147483647;
  position: fixed;
  background-color: #111111 !important;
}

iframe {
  overflow: hidden;
  display: block;
  width: 100%;
  border: none;
}