html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
  }
  iframe {
    position: fixed;
    top: 10vh;
    left: 10vw;
    width: 80vw;
    height: 80vh;
    border: none;
  }

  @media (max-width: 768px) {
    iframe {
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
    }
  }