            border-width: 12px; }
          100% {
            -webkit-transform: scale(0.6);
                    transform: scale(0.6); }
        }
    </style>
  </head>

  <body>

    <nav class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
                    <span