lol. That is assuming the author spell-checks at all!
Starting with a regular capital is grammatically correct, but doesn’t require splitting the letter from the rest of the word.
Reverting back to the “styling is done on the CSS sheet, structure is done in the HTML” I would consider ALL BOLD TYPING in html as styling. Just mark the applicable text with a class, and then you can use all the available CSS options to style it however you want… including different styles for differently capable devices.
But, do as you wish…