fix

mainwww/public/js/toggle.js

@@ -0,0 +1,25 @@
+// Wait until the DOM is loaded, before trying to query the document
+$(document).ready(function(){
+
+  // select the .head elements, and bind an event handler to them
+  $('.toggle-btn').click(function(e){
+
+    // prevent the default action of the click event
+    // ie. prevent the browser from redirecting to the link's href
+    e.preventDefault();
+
+    // 'this' is the execution context of the event handler
+    // it refers to the clicked .head element
+    $(this)
+
+    // Walk up the DOM tree to find the closest list item
+    // It is the closest shared ancestor of both .head and .content
+    .closest('li')
+
+    // Search the list item for .content
+    .find('.toggle-content')
+
+    // Trigger the sliding animation on .content
+    .slideToggle();
+  });
+});