IE High Contrast Relative Font Size Conflict

Yup, another fine IE bug.  We were getting rare and unreproducible large (HUGE!) font size complaints from users on a new page (all the old pages were just fine) and only in IE.  Customer Service - with the help of one clever user - finally tracked down the issue to the Windows XP Accessibility feature called "High Contrast."  In my futile attempts to make the new page compatible with this Windows feature, I trailed the feature's failure down to nested relative font sizes.  This is a fun one to reproduce on your own computer.  Imagine all the lovely places it will occur on your own supposedly perfect web pages!

Broken Example

Fixed Example