Just a late night choice, I can see how you'd consider it a mistake, especially how it affects the document outline. I consider that a very subsidiary part of the document as it only comes into play after a JS interaction. Perhaps I should have thought about it a bit more. However, I was aiming to get the thank you messages to fit in the box without making it taller by playing on the sizes that normalize sets for headers to get it to fit w/o adding more styles.