col-md-4 col-sm-6 portfolio-item">
            <a class="portfolio-link" href="graph/lollipop_basic.html">
              <div class="portfolio-hover">
                <div class="portfolio-hover-content">
                  <p>Most basic</p>
                  <hr />
                  <p class="explanation_portfolio">
                    The most basic lollipop chart you can do in d3.js. Keeping
                    only the core code.
                  </p>
                </div>
              </div>
        