how do I create a widget with the HTML / CSS / JS files I made?

how do I create a widget with the HTML / CSS / JS files I made?

how do I create a widget with the HTML / CSS / JS files I made?

I can only create if it is external hosting (Ex: Codepen), but I wanted to use the hosting of the zoho itself.

I already sent the .zip file and pointed to the path of the index.html, but I don't know why it doesn't work.