<div class="txtright fr">
    <a href="#" class="btn" id="conn_butt">Connexion</a>
    <nav role="navigation" aria-label="Menu principal" id="admin_menu">
        <ul>
          <li>
              <button type="button" id="logout">Déconnecter</button>
          </li>

        </ul>
    </nav>
</div>