ry.com/graph/custom_color.html"
            >Color</a
          >
          <a
            class="dropdown-item"
            href="https://www.d3-graph-gallery.com/graph/custom_theme.html"
            >Themes</a
          >
          <a
            class="dropdown-item"
            href="https://www.d3-graph-gallery.com/graph/custom_legend.html"
            >Legend</a
          >
          <a
            class="dropdown-item"
            href="https://www.d3-graph-gallery.com/graph/custom_responsive.html"
 