<section class="container">
                       <linha class="row justify-content-md-center" >    
                          <col1 class="col-sm">  
                             <center>
                               <bloco class="card shadow-sm  text-center" style="width:16rem; height:3em;"> 
                                        <h6 class="card-header mb-2 bg-secondary text-white "
                                        <BLOCO DE INFORMAÇÃO</h6>
                                             </bloco>
                               <br />
                               <bloco class="card shadow-sm  text-center border-0" style="width:16rem; height:20em;">
                                         <div class="card-body">
                                               <p class="card-text  bg-warning">
                                                   Conceito  
                                               </p>
                                               <br />
                                               <div class="d-flex justify-content-between align-items-center">
                                                   <p class="card list-group list-group-flush" style="width:16rem; height:2rem;">
                                                         <a class="dropdown-item" title="Tarefas a serem executadas no site" target="_blank">
                                                         Caracteristicas</a>
                                                   </p>
                                            </div>
                                       </div>
                                </bloco>
                             </center>                               
                          </col1>
                       </linha>
                    </section>