
              href="https://beta.observablehq.com/@mbostock/d3-pie-chart"
            >
              <div class="portfolio-hover">
                <div class="portfolio-hover-content">
                  <p>Pie chart with annotation</p>
                  <hr />
                  <p class="explanation_portfolio">
                    A pie chart by Mike Bostock with fancy annotation for each
                    group.
                  </p>
                </div>
              </div>
              <img
     