update

public/demos.html

@@ -359,6 +359,10 @@
     ></a>
 
     <!-- Vendor JS Files -->
+    <script
+  src="https://code.jquery.com/jquery-3.7.1.min.js"
+  integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo="
+  crossorigin="anonymous"></script>
     <script src="assets/vendor/bootstrap/js/bootstrap.bundle.js "></script>
     <script src="assets/vendor/aos/aos.js "></script>
     <script src="assets/vendor/php-email-form/validate.js "></script>