ss="row">
          <div class="col-lg-5 text-center align-self-center">
            <h3 class="text-uppercase">Related blocks &rarr;</h3>
          </div>
          <div class="col-lg-5">
            <ul>
              <li>
                <i>Arc diagram section - </i> by
                <a href="../arc.html">the d3 graph gallery</a>
              </li>
              <br />
              <li>
                <i>Arc diagram - </i>by
                <a
                  href="https://bl.ocks.org/rpgove/53bb4