My Nav Bar is fixed in Design mode but isn't actually working


I have a problem that my navigation and footer is fixed in preview mode, and I want it to be fixed like that. However when I put it in preview mode and publish it, it’s not working… I don’t know why but I keep create the new nav bar and test but it’s not working as well… Please help

Here is my site Read-Only: Webflow - Main Work by Mai-N.

My main site:

Hi @mai.ngx I think it is working in the preview

If you click my website, it’s not working… It works in preview mode idk why

I can also see both nav bar and footer working fine on the published site.
Maybe it’s a problem on your browser. Have you tried on another?