Apply template to exisiting site

Apparently, here’s an option to create a new site with the template, but not an option to apply template to existing site. Is there a way to apply template to exisiting site?

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

There’s none. There’s no “theme” approach in Webflow.
You can bring your existing content to the new site, or copy paste some elements of the template to the old site. If you do that, try to copy and paste everything at once to get all the styles from the new site to the old site at once. It could be a bit messy.

The clean way is bringing the content to the new site, or to manually redesign the old site.