bootstrap button group
<div class="btn-toolbar" role="toolbar" aria-label="Toolbar with button groups"> <div class="btn-group mr-2" role="group" aria-label="First group"> <button type="button" class="btn btn-secondary">1</button> <button type="button" class="btn btn-secondary">2</button> <button type="button" class="btn btn-secondary">3</button> <button type="button" class="btn btn-secondary">4</button> </div> <div class="btn-group mr-2" role="group" aria-label="Second group"> <button type="button" class="btn btn-secondary">5</button> <button type="button" class="btn btn-secondary">6</button> <button type="button" class="btn btn-secondary">7</button> </div> <div class="btn-group" role="group" aria-label="Third group"> <button type="button" class="btn btn-secondary">8</button> </div> </div>
