How to create a site on GitHub Pages that does not have a repository in the address?

Question

GitHub

I met several github sites in the address bar without a repository, for example sizovilya.github.io . I want to create a site without a repository so that there is no /hello/ at the end of the address. Can it be done?

Answer 1

If so:

then:

Please note that when you upload index.html to the repository, you need to wait a while until it appears on GitHub Pages.