<div class="alert alert-warning alert-dismissable">
  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">
    <span class="pficon pficon-close"></span>
  </button>
  <span class="pficon pficon-warning-triangle-o"></span>
  <strong>There might be a problem here!</strong> We are not really sure, but <a href="#" class="alert-link">it might be bad</a>.
</div>
