body {
    height: 100vh;
    width: 100%;
    margin: 0;
    overflow: hidden;
  }
  
  iframe {
    height: 100vh;
    width: 100%;
  }
  
  #text {
    position: absolute;
    background: black;
    width: 270px;
    color: white;
    padding: 5px;
    opacity: 0.6;
  }
  
  #button {
    position: absolute;
    width: 55px;
    height: 30px;
    display: none;
  }