body {
  background-color: #222222;
  box-sizing: border-box;
  margin: 0;
}
@media screen and (max-width: 600px) {
  .iframe {
    height: 100%;
    width: 100%;
  }
}
@media screen and (min-width: 600px) {
  .iframe {
    height: 100vh;
    width: 100vw;
  }
}
div.col-sm-6 {
  padding: 0;
}