       <button type="button" class="btn btn-outline-info">Info</button>
              <button type="button" class="btn btn-outline-light">Light</button>
              <button type="button" class="btn btn-outline-dark">Dark</button>
            </div>
            <div>
              <button type="button" class="btn btn-primary btn-lg">Large button</button>
              <button type="button" class="btn btn-secondary btn-lg">Large button</button>
            </div>
            <div>
              <button type