html,
body {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  padding: 0;
  margin: 0;
  border: none;
  background: #f7f1e5;
}
iframe {
  position: relative;
  border: none;
  margin: 0;
  padding: 0;
  transform-origin: top left;
  width: 100%;
  min-height: 100%;
}