Functionality faq collapse

_includes/block-faq-1.html

@@ -11,4 +11,22 @@
       </div>        
     </div>
   </div>
-</section>
+</section>
+
+<script>
+  let coll = document.getElementsByClassName("collapsible");
+  let i;
+  
+  for (i = 0; i < coll.length; i++) {
+    coll[i].addEventListener("click", function() {
+      this.classList.toggle("active");
+      let content = this.nextElementSibling;
+      if (content.style.display === "block") {
+        content.style.display = "none";
+      } else {
+        content.style.display = "block";
+      }
+    });
+  }
+  </script>
+