.iframe-background iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Even larger font size for screens 1200px and wider */
@media (min-width: 1600px) {
  .h1 > * {
    font-size: 150px;
  }
  
  .h2 > * {
    font-size: 40px;
  }
  
  .body > * {
    font-size: 24px;
  }
  
  
  .button-1 > * {
    font-size: 20px;
  }
  
   .button-2 > * {
    font-size: 20px;
  }
  
}