It looks like CSS transitions were not part of Firefox 3.5, but got in after the release so it might work in firefox nightly, but for just about every firefox u

It looks like CSS transitions were not part of Firefox 3.5, but got in after the release so it might work in firefox nightly, but for just about every firefox user who visited it today it would be broken. https://bugzilla.mozilla.org/show_bug.cgi?id=435441 https://bugzilla.mozilla.org/show_bug.cgi?id=435441