       padding-top: 1em;
        border-top: thin dotted;
      }
      .extra-style {
        font-size: 200%;
      }
      .hidden {
        visibility: hidden;
      }

      .clazz\:colon {
        color: green;
      }
    </style>
  </head>
  <body>
    <ul class="navbar clazz:colon">
      <li>
        <a href="index.html">Home page</a>
      </li>
      <li>
        <a href="musings.html">Musings</a>
      </li>
    </ul>
    <h1>My first styled page</h1>
    <p>Welcome to my styled page!</p>
    <