Why does font-size CSS not work on iPad HTML emails?

Question

I'm working on an HTML email and have been running to a problem on the mail client on the iPad only.

It seems that setting inline CSS to "font-size: 12px" or any other size does not work on the mail app for iPad, despite the font-size displaying correctly in the Mail app for Mac OS X.

Any ideas?

Answer 1

Does it support composing styled text? (i.e., bold, italics, font sizes) No (confirmed), aside from any formatting carried over by copy-and-paste from Safari or other apps. (It definitely supports displaying HTML/rich text messages.)

http://www.macintouch.com/reviews/ipad/faq.html

Answer 2

Webkit automatically adjusts font-sizes on the ipad for easy reading. This CSS fixes the problem:

-webkit-text-size-adjust: none;