I had to make some changes to your code to get it to work in codepen:
- removed all
</script> elements from the JS Panel
- moved all html from your
<head> section and put it in Settings -> HTML -> Stuff for Head
- Changed your link to jquerysctipttop.css to use HTTPS instead of HTTP
Anyway, maybe it’s just a matter of what order you are loading jQuery - make sure it loads before other libraries that use it. Here’s a fork of your codepen: https://codepen.io/anon/pen/YxVXaE
I hope it helps!