Anton, and everyone else..
It now includes a comment at the top, and a place for authorship credit at the bottom, in a footer.
I changed the ref to styles.css to be a full, not relative URL, to avoid that possible error.
I think this is important, because people who want to know more about the site, should have a pointer that tells them how to do that.
Anton, you might include your email address in this section, or a pointer to your personal website, or a short sentence about what you do. It's up to you how to (or if) use it.
Of course, you'll have to re-do the customization, but I'd recommend doing that rather than trying to pull out the modified pieces.
Dave