<div id="am-barre-tache" role="menubar" class="menu-activite">
  <ul>
    <li role="list" class="btn-group">
      <button aria-label="Tâche simulée" class="btn btn-default active">
        <span class="libelle">
          <span>...</span>
        </span>
      </button>
      <button type="button" title="Fermer" aria-label="Fermer cette tâche" uib-tooltip="Fermer la tâche" tooltip-placement="left" class="btn btn-default close"><span aria-hidden="true" class="icon">×</span></button>
    </li>
</div>