Summary: context of reflowable, re-sizeable ebooks.
All things are relative from a main body text of 1em which can be ANY physical size
Any top padding more than a few times the heading size will fail
Any margin (heading margin-bottom) between heading and body needs to be modest, maybe not more than 2em.
Forget about trying to set outer margin for main body more than zero.
Forget about trying to set margins at the bottom of a page.
You only know that the start of a file is the top of a page.
You don't know number of lines or size of screen. Yes, there are media queries and even javascript. Neither of those work on many apps and ereaders.
Amazon has over 90% of world English Language ebook market. The upload is epub which they convert to KFX for most and azw3 for some older ereaders. The ending of Download & Transfer ended "old mobi" for the tiny number of customers with oldest ereaders. Most of their customers read on a phone app.
Last edited by Quoth; 08-05-2025 at 03:05 PM.
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