Agrega header al index

Author: ximecalderon

index.html

@@ -149,6 +149,18 @@ <h2>Ejercicios</h2>
             >
             <a href="./fullstock-templates/products-section.html">Preview</a>
           </li>
+          <li class="css">
+            CSS Responsive: Header Global Fullstock
+
+            <a
+              rel="external noopener"
+              target="_blank"
+              title="Enlace a repositorio en Github"
+              href="https://github.com/codeableorg/fundamentals-html-css/commit/8c1708efad749c7c10a3f8ea38b8544653914ebe"
+              >Código</a
+            >
+            <a href="./fullstock-templates/header.html">Preview</a>
+          </li>
         </ul>
       </section>
       <section>