yui/yui3 — comment on commit e1d2c90eed2334936210d1e1c6c53a43934ed517
File: src/button/css/cssbutton.css line 34
By derek:

Last I checked it was rendering as expected in IE9, so I'll verify that it currently is, and if so, update the comment to include IE9. Otherwise, will add in an appropriate hack and/or IE9 fix.