html {
  height: 100%;
  position: relative;
}
body {
  min-height: 100%;
  position: static;
  margin: 0;
}
div {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}
iframe {
  width: calc(100% + 50px);
  height: calc(100% + 48px);
  border: none !important;
}