After trawling through posts for a while, I thought I'd come to the understanding that the Kindle will only do margins on things like block quotes in multiples of 2em ...
... then I downloaded a sample of The Devil's Chaplain and there were quotes in there of only 1em! Or less!
What I've been trying to do, is edit an .epub in Sigil so that paragraphs have an indent only on the first line only and then the quotes are all indented as a block ... but the best I can get is the 2em
my goal is 1em text-indent and the same 1em for the margins ... but no joy.
Do .azw formats have special allowances for margin sizes?