Hi Ruben,
Right now I'm trying to learn HTML5 and CSS3 and your trick is very
pertinente, with for example a kind of configuration like:
Code:
@media all and (max-width: 1024px)
But are you sure it applies either way to Sigil or epub? As you said there are no results within Sigil or in a eInk reader. However Sigil does not see the code "font-size: 4vw;" as incorrect.
Otherwise, I misunderstood the meaning of your post.
PS Hope it's not too hot in Rosario; relatively warm here in the "Great North"!