n>
              <button type="button" class="btn btn-dark">Dark</button>
              <button type="button" class="btn btn-link">Link</button>
            </div>
            <div>
              <a class="btn btn-primary" href="#" role="button">Link</a>
              <button class="btn btn-primary" type="submit">Button</button>
              <input class="btn btn-primary" type="button" value="Input">
              <input class="btn btn-primary" type="submit" value="Submit">
              <input class="btn 