    <link href="offcanvas.css" rel="stylesheet">
  </head>

  <body class="bg-light">

    <nav class="navbar navbar-expand-md fixed-top navbar-dark bg-dark">
      <a class="navbar-brand" href="#">Offcanvas navbar</a>
      <button class="navbar-toggler p-0 border-0" type="button" data-toggle="offcanvas">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class="navbar-collapse offcanvas-collapse" id="navbarsExampleDefault">
        <ul class="navbar-nav mr-auto">
          <li c