Font size won't change
I created an epub with Sigil. When I open it in Mantano, it's impossible to change the font or the font size.
I read somewhere that if you want to keep text formatting (italics, colored letters...), you can't copy a text and paste it in Sigil. First you have to save the text in html and then open it in Sigil. That's what I did.
I wrote a text in Microsoft Word, saved it as html, opened the html with Sigil, edited and saved it as epub. When I open it with Mantano, the text formatting was preserved, but it uses the same font Word used. I can't change it.