i copied that out of your style sheet for #29452...
Not “my” style sheet since the style of the download doesn’t match the style that I uploaded to PG. BUT, in this regard I agree with PG – choice of style should be primarily up to the publishing house (meaning PG), NOT the book transcriber. But for PG to be putting margins within HTML is a mistake IMHO, it is well-established that HTML users set the size of the width of their text by adjusting the width of the surrounding window of the HTML browser.
Choice of asterisks as a fancy rule looks a bit strange.
tell me what you want instead. Leave it out and use some extra vertical whitespace instead, or if you insist on horizontal rules use mdashes --- since EPUB doesn’t have proper support for horizontal rules (but MOBI does), or upsize your asterisks to give them more visual weight and put spaces between them.
Too small and too light for the intended use.
i have no idea what this means. It means that when I read this on my Kindle or in my web browser it is so small and leaves so little visual impact compared to the surrounding text that it looks like a mistake.