  <p class="astro-3HS6YOU4">
                    <code class="astro-3HS6YOU4">.app-heading</code>, <code class="astro-3HS6YOU4">.app-side</code>, <code class="astro-3HS6YOU4">.app-footer</code> elements will be fixed. Vertical scroll bar
                    will appear on <code class="astro-3HS6YOU4">.app-main</code> and <code class="astro-3HS6YOU4">.app-side</code> elements when it's needed.
                  </p>
                  <p class="astro-3HS6YOU4">
                    look like this
             