   <a class="nav-link" href="#home"
                  >Home.<span class="sr-only">(current)</span></a
                >
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#about-us">About Us.</a>
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#portfolio">Portfolio.</a>
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#blog">Blog.</a>
              </li>
         