When I first created my GitHub webpage and registered a domain at Google Domains, I didn't realize I had it made with HTTP.
To switch it to HTTPS, I changed my Google Domains DNS (screenshot below)
Then I went to the GitHub page settings and clicked the square box to enforce HTTPS (screenshot below).
Now, my page opens in, for a lack of a better term, plain HTML format (screenshot below). I'd appreciate it if you could let me know how to change it to a normal view. Thanks so much!