what is portlet and panel in bootstrap 5

@MohamedTammam i not mean collapse

@zwarkyaw Can you please show an example.

@MohamedTammam

 <div class="row">
                <div class="portlet light bordered">
                    <div class="portlet-body">
                        <div class="col-md-6 col-sm-12">
                            <div class="panel panel-primary">
                                <div class="panel-heading"> <h4 class="bold"  style="color:rgb(153, 20, 20);">Your Current BV</h4></div>
                                <div class="panel-body">
                                    
                                </div>
                               </div>
                            </div>
                         </div>       
                    </div>
                 </div>
            </div>
         

@zwarkyaw I asked for an image/element reference to the expected end results.