Why not just simply make sure that the smaller circle is attached to the larger circle so that it is contained within the larger circle element?
https://support.wix.com/en/article/attaching-elements-to-a-box
Also, this forum is for all code related issues on your site, for your question about the editor itself, you are better suited going through Wix Support themselves.
https://support.wix.com/en/about-wix/contacting-wix-support
Plus, you can read and search Wix Support pages to find whatever you are wanting to know.
https://support.wix.com/en/