Originally Posted by sourcejedi
With the <div> method, you have to use CSS to ensure that the <div> doesn't end up at the end of a page.
If you follow the usual style in English, of having no indent after a scene break, it wouldn't matter much (other than aesthetically) if the break is placed at the bottom of a page. If you see a blank space at the end of a page and the next page starts with no indent, there's a scene break; if there is indent, that's a normal paragraph break, with widow/orphan control.
Or you could use something to mark scene breaks. Project Gutenberg books use a group of asterisks, even if the original printed book had just some vertical space:
<div class="scene-break">* * *</div>
(ideally, that would use the "content" CSS property, but it's not included in the ePUB standard)