Webpage of Kang, SungKu
You can add more pages to your site by creating more new files. Each file will be available on your site in the same directory structure as your publishing source. For example, if the publishing source for your project site is the gh-pages branch, and you create a new file called /about/contact-us.md on the gh-pages branch, the file will be available at https://.github.io//about/contact-us.html.
You can also add a theme to customize your site’s look and feel. For more information, see "Adding a theme to your GitHub Pages site using Jekyll".
To customize your site even more, you can use Jekyll, a static site generator with built-in support for GitHub Pages. For more information, see "About GitHub Pages and Jekyll".