I could *definitely*, desperately use some help with this CSS.
I'm a *totally* novice user of calibre, and I have visual processing issues which demand a certain amount of white space between the text and the frame.
HOWEVER, no matter what fiddling I do to the text alignment, the maximum width, or the margins (measured in pixels only?)--- NONE of those changes show up in the default help "book".
Being able to apply a proper CSS to *everything* I open for myself will allow me to read more (less time spent converting a file to exactly the same file type, but with my necessary margins, et alia).
I need about 1/8-1/4" on all sides of the frame as white space. I definitely, absolutely, prefer left-justified formatting,