Does anyone know how to make a selection of text have different margins in AO3? I'm finally getting the chance to put some of my stuff up there that I'd forgotten to do, and in TML;GML there are letters between Draco and his parents. I kind of wanted them to be a bit offset, with narrower margins, if possible, so as to show that they aren't just italic text. If it is, does anyone know the coding for it?
(...For that matter, does anyone know the coding to do that here on LJ too?)