Fiddle a bit with the styling of headings
Make it a bit prettier in Web browsers

The font in the book appears to be Miramar:
http://www.identifont.com/show?31R

PT Serif is fairly similar:
http://www.google.com/webfonts/specimen/PT+Serif

I didn't have much success with webfonts in Aldiko, so make this Web-only.