[Brett Merkey]

"...may be very interesting for all type of repeated features"
It certainly is. However, it is specially convenient in dealing with books that use whitespace alone for scene breaks. Whitespace is an irritating waste of space for me. The method of pseudo-elements can add a visual break without touching the HTML code or even altering the original CSS. This is easy when the whitespace is produced by adding space to any paragraph above or below where the break is wanted. Style a pseudo-element version of that paragraph and you are done. Presumably the original code will serve as a fallback if that is relevant. I've used the method only on Amazon and Samsung products for about 12 years so I do not know that range of support beyond that.