body {
    font-family: Helvetica, Arial, sans-serif;
  }
  
  h1 { text-align: center; }
  
  p { clear: both; }
  
  .hidden {
    display: none !important;
  }
  
button {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

  #notSupported b:first-of-type,
  #requireHTTPS b:first-of-type {
    color: #b71c1c;
  }
  
  .instructions {
    font-size: 1.5rem;
  }
  
  .instructionsCount {
    border: 1px solid #666;
    border-radius: 3rem;
    display: inline-block;
    font-size: 2rem;
    height: 2rem;
    line-height: 2rem;
    margin: 0 1rem 1rem 0; 
    padding: 1rem;
    text-align: center;
    vertical-align: middle;
    width: 2rem;
  }