Why is Sigil changing the font size?
I used Calibre to convert an lrf to epub. In doing so, the book ended up with a duplicate cover. So, I installed Sigil and deleted the second cover picture and page break, and saved it. I was surprised to see that in the resulting epub file, the text is smaller. Just to test, I opened the Calibre-created epub in Sigil and re-saved it without making any changes, and sure enough, the font size got smaller. Why is this happening? Also, what other changes are being made to the document when it passes through Sigil?