Untitled

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

  <!-- Login page template -->
  <div class="container" th:fragment="content">

    <div class="panel-group" id="accordion">
      <div class="panel panel-default">
        <div class="panel">
          <h4 class="panel-title">
            <a data-toggle="collapse" data-parent="#accordion" href="#nationnal">
            Nationnal</a>
          </h4>
        </div>
        <div id="nationnal" class="panel-collapse collapse">
          <div class="panel-body">Afficher les contrats</div>
        </div>
      </div>
      <div class="panel panel-default">
        <div class="panel">
          <h4 class="panel-title">
            <a data-toggle="collapse" data-parent="#accordion" href="#magasin">
            Magasins</a>
          </h4>
        </div>
        <div id="magasin" class="panel-collapse collapse">
          <div class="panel-body">Afficher les magasins</div>
        </div>
      </div>
    </div>

  </div>
</body>
</html>