Moving a project from codepen to github

Hi I have been using CodePen up until now for the projects and now I am trying to move one to GitHub to get the feel for it. I have all the files in my respository and I am now trying to set up GitHub Pages so it opens directly to the index.html file from CodePen and thus opens the webpage. I can’t seem to figure this out and would like some help.

Here is the respository link:

Here are a couple articles to read on the subject.