ave a nav which obscures the focussed element after it is scrolled to the top of the window. To avoid this, add the <code>data-smooth-scroll-offset=&quot;110&quot;</code> where <code>110</code> is a value in pixels which matches the height
              of your nav.</p>

          </div>
        </article>

        <article id="popperjs" class="mb-4 mb-md-6">
          <h3> <p>Popper.js</p>
 </h3>
          <div>
            <p><a href="https://popper.js.org/">Website</a>, <a href="https://popper.js.org/pop