               <button type="button" class="btn btn-primary">Left</button>
                <button type="button" class="btn btn-primary">Middle</button>
                <button type="button" class="btn btn-primary">Right</button>
              </div>
              <div class="btn-group btn-group-sm mb-1 mb-md-0" role="group" aria-label="Basic example">
                <button type="button" class="btn btn-primary">Left</button>
                <button type="button" class="btn btn-primary">Middle</button>
   