Update static/appS.js

static/appS.js

@@ -259,4 +259,10 @@ document.addEventListener('DOMContentLoaded', () => {
         }
     `;
     document.head.appendChild(style);
+
+
+  var backarrow = document.querySelector(".fa-arrow-left")
+  backarrow.addEventListener('click', function () {
+        window.location.href = '/hellopage.html';   // Redirect to Question Answering app
+    });
 });