ef="https://bl.ocks.org/tezzutezzu/c2653d42ffb4ecc01ffe2d6c97b2ee5e"
            >
              <div class="portfolio-hover">
                <div class="portfolio-hover-content">
                  <p>Pie chart with animation</p>
                  <hr />
                  <p class="explanation_portfolio">
                    Good illustration on how to animate transition between 2
                    input data.
                  </p>
                </div>
              </div>
              <img
         