t="_blank" class="btn btn-icon btn-primary mb-3">
                                <span class="btn-inner-icon"><i class="fas fa-info-circle"></i></span>
                                <span class="btn-inner-text">Bootstrap 4 documentation</span>
                            </a>
                        </div>
                        <div id="margins" class="my-5">
                            <h5 class="mb-3">Margins</h5>
                            <p>Use these classes to add increments of 50 pixels of marg