<div class="panel panel-inverse">
  <div class="panel-heading">...</div>
  <div class="alert alert-success alert-dismissible fade in rounded-0 mb-0">
    <div class="d-flex">
      <i class="fa fa-check fa-2x me-1"></i>
      <div class="mb-0 ps-2">
        ...
      </div>
    </div>
    <button type="button" class="btn-close ms-3" data-bs-dismiss="alert"></button>
  </div>
  <div class="panel-body">...</div>
</div>