Thanks for building this. I'm trying to make my book available in all these formats but my biggest issue is that it is hard to read a book on both desktop or mo

Thanks for building this. I'm trying to make my book available in all these formats but my biggest issue is that it is hard to read a book on both desktop or mobile. Does anybody knows of any interesting UI that works for books? I've looked into interactive books but it's only fun for few pages and then it leans more toward annoying. Any suggestions?