octocat/Spoon-Knife ? reverse-engineered prompt

Build me a simple one page website from this repo that I can use to practice forking and making a pull request.

Keep it very basic, but make the page look a little more polished than the default example. I want a clear headline, a short welcome message, and a nice centered layout with some simple styling in the CSS. Feel free to improve the colors, spacing, and typography so it feels like a real starter page.

Please keep it easy to understand and leave the structure simple enough that someone can edit it later without much effort. If you need to check anything, look up the current docs online first.