<div class="panel panel-inverse">
  <div class="panel-heading">...</div>
  <div class="panel-toolbar">
    <div class="btn-group me-5px">
      ...
    </div>
    <div class="btn-group">
      ...
    </div>
  </div>
  <textarea class="form-control no-rounded-pill border-1 border-start-0 border-end-0 border-bottom-0 rounded-0 bg-light" rows="5">...</textarea>
  <div class="panel-footer text-end">
    <a href="#" class="btn btn-white btn-sm">Cancel</a>
    <a href="#" class="btn btn-primary btn-sm ms-5px">Action</a>
  </div>
</div>