Custom booking form not displaying


I’m adding a custom restaurant booking embed to a page. I’ve tested it as working in a separate Codepen. But when it’s added to a Webflow page, it appears blank? I can see the HTML markup for it rendered on the published page—but nothing displays?

Here is my site Read-Only: Webflow - Mojo's

Here’s the page in its published state: Mojo's Rhosneigr – Book a table

I see the widget on chromium browsers when I tested.