Thank you for taking the time to comment.
I realize in hindsight that the “learn more” approach was to bait the reader to click the link. However that approach from older days does create accessibility weaknesses. After the fact, I can see that my page does rely a little bit too much on visually being able to see it.
The extra whitespace on top was a deliberate attempt to get past the left upper corner of the tests. I see that it worked on a larger computer console or screen, but not as well for mobile. So its success level was partial.
I will look again for the syntax issues. Thank you for taking the time to look at this tribute page assignment and make suggestions.