I’ve spent a bit of time trying to centre my text in some eBooks recently. On every device I have experimented with, my text is turning up in the centre (exactly as I want) except when I view it on an iPad. WHY!!!! Is it my code? Am I missing something?? After smashing my head on the desk a few times I found the answer. The answer is… its not my code but rather a setting within iBooks.
If you are developing eBooks for the iPad and find the alignment of your text is not exactly what you were expecting go to: Settings -> iBooks and turn off ‘Full Justification’, you may then find you will get the results you were expecting.