ortfolio">
                    Lollipop plot often looks better horizontal: it makes label
                    easier to be read. Find how to do it!
                  </p>
                </div>
              </div>
              <img
                class="img-fluid"
                src="img/graph/lollipop_horizontal.png"
                alt=""
              />
            </a>
          </div>
          <div class="col-md-4 col-sm-6 portfolio-item">
            <a class="portfolio-link" href="graph/lollip