Each button is a separate image that links to my website, which records the letter, and then redirects you back to GitHub. The top part of the screen is dynamically generated, and you can view it directly here: https://kbd.jse.li/screen.gif
[0] https://docs.github.com/en/github/authenticating-to-github/a...
[1] https://github.com/veggiedefender/typing/blob/0ed7c9c17970d6...