Petregistry/src/main/resources/templates/navbar.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">
<head th:include="head :: head"></head>
<body>
<div th:substituteby="navbar :: navbar"></div>

<div th:fragment="navbar" class="navbar navbar-inverse navbar-static-top">
  <div class="navbar-inner">
    <div class="container">
      <button type="button" class="btn btn-navbar" data-toggle="collapse"
              data-target=".nav-collapse">
        <span class="icon-bar"></span> <span class="icon-bar"></span> <span
              class="icon-bar"></span>
      </button>

      <a class="brand" href="/">New Registration</a>
      <a class="brand" href="./GetRegisteredPetdetails">Existing Registration</a>


      <div class="nav-collapse collapse">
        <ul class="nav">
          <li class=""><a class="brand" href="/">New Registration</a></li>
          <li class=""><a class="brand" href="./GetRegisteredPetdetails">Existing Registration</a></li>
        </ul>
      </div>
    </div>
  </div>
</div>
</body>
</html>