Wow, you are right. The issue is fully replicable.
I've just downloaded your first version (as epub) and when uploaded to my H2O through KoboTouch Extended driver (I mean with an automatic conversion to kepub) the rendering is absolutely FUBAR.
I'll try to narrow the issue down... Because I swear you that I've got books without any margin setting in body (because I ALWAYS explicitly delete them) which perfectly work.
Side comment:
Do not convert into kepub by just changing the file extension. Kepubs have a lot of <span>s in them which are needed by the annotation system and I don't know if other modifications are also made...
|