You can check for common errors to resolve issues with custom domains or HTTPS for your GitHub Pages site.| GitHub Docs
A repository contains all of your code, your files, and each file's revision history. You can discuss and manage your work within the repository.| GitHub Docs
GitHub Pages supports using custom domains, or changing the root of your site's URL from the default, like octocat.github.io, to any domain you own.| GitHub Docs