  <style type="text/css">
    div.site
    {
      margin-top: 100px;
    }

    table
    {
      width: 50%;
      margin-left: 27%;

    }
    th, td {
    padding: 15px;
    text-align: center;
    color: white;
}
  #extra
  {
    margin-left: 60px;
    margin-right: 40px;
    margin-top: 1px;
    background-color: white;
  }
  #info
  {
    margin-left: 60px;
    margin-right: 60px;
    margin-top: 150px;
    background-color: white;
    text-align: center;
  }
  </style>
 
  <body>

    <!-- Fixed navbar -->
    <nav class="navbar navbar-default 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 class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#">Aisis</a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
          <ul class="nav navbar-nav">
            <li><a href="/home">Home</a></li>
            <li class="active"><a href="/terms">Terms & Conditions</a></li>
            <li><a href="/contact">Contact</a></li>
           
          </ul>

          <ul class="nav navbar-nav navbar-right">
          		 <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Username <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
                <li><a href="#">Something else here</a></li>
                <li role="separator" class="divider"></li>
                <li class="dropdown-header">Nav header</li>
                <li><a href="#">Separated link</a></li>
                <li><a href="#">One more separated link</a></li>
              </ul>
            </li>
            </ul>
            <!--<li><a href="../navbar/">Default</a></li>
            <li><a href="../navbar-static-top/">Static top</a></li>
            <li class="active"><a href="./">Fixed top <span class="sr-only">(current)</span></a></li>
          </ul>
        </div><!--/.nav-collapse -->
      </div>
    </nav>
