Bigfoot Footnotes using CMS
This is an example integration of Bigfoot Footnotes using CMS. Set an id for your footnote in the footnotes collection and use a custom embed widget for the markup.
See bigfootjs here: http://www.bigfootjs.com/
Here are some good resources:
Using custom code in the head and body: https://university.webflow.com/article/how-to-add-custom-head-and-body-code-to-a-webflow-site
Using custom code in an embed component on the page: https://university.webflow.com/article/embed
Webflow does not typically provide support for custom code integrations, a good resource to get help is on the code help pages: https://forum.webflow.com/c/publishing-help/custom-code