Originally Posted by DiapDealer
H* tags always trigger a page-break-before on the Kindle. That's not always desirable. Like chapter numbers with a (same-sized) chapter name beneath it. Nobody wants a pagebreak in between those two items, so they use a P tag with CSS to simulate a header.
I wish chapter headers were more consistently tagged, but I also understand why they're oftentimes not.
That's another pet peeve of mine: separating the chapter number from the chapter title. If you place both of those in separate paragraphs the TOC looks bad. I prefer placing both in the same paragraph and on the same line, but if aesthetically speaking separate lines are more appealing then I use <br />