Add toggle for nav bar on landing page

templates/landing_page.html

@@ -193,4 +193,9 @@
             </div>
         </section>
     </div>
+    <script>
+        document.getElementById('nav-toggle').onclick = function () {
+            document.getElementById("nav-content").classList.toggle("hidden");
+        }
+    </script>
 </body>