body {
    font-family: Helvetica, Arial, sans-serif;
  }
  
  h1 {
    text-align: center;
  }
  
  p { clear: both; }
  
  .hidden {
    display: none !important;
  }
  
  #notSupported b:first-of-type,
  #requireHTTPS b:first-of-type {
    color: #b71c1c;
  }
  
  button[disabled] {
    opacity: 0.5;
    border: 1px solid rgba(74, 20, 140, 0.5) !important;
  }
  
  button {
    background-color: #e8eaf6;
    border: 1px solid #3f51b5;
    font-size: 1em;
    float: right;
    padding: 0.75em;
  }