(1) What you can do in Studio.Design
Using the Embed box
With the Embed box, you can embed HTML, CSS, and JavaScript code. It's handy for displaying external videos, social media posts, and more on your site.
Learn more: About the Embed box
Custom code (paid plans)
On paid plans, you can add your own code to the <head> or <body> tags, either across your entire site or on individual pages.
Learn more: About custom code
(2) What you can't do in Studio.Design
Editing HTML code directly
You can't directly edit the HTML of the site itself.
Exporting code
Studio.Design doesn't offer a way to export your site's HTML code.