Created an attachment (id=10878) [details]
Testcase

The box containing 'wrong position' should be offset 15px from the border edges
of the containing block.

We do exactly the same as Firefox and Opera.

At least Firefox 1.0.3 follows the CSS 2.1 spec.

You're right about Opera, it's broken, too.

I get the same result with Firefox 1.0.3

Whey is the text green in the spec? Maybe it is under review.

Hmm. You're right, my testcase doesn't work correctly, though I definitely
encountered this problem while working with a real layout. I'll work on a
better testcase.

I was under the impression that the green text highlighted a change from the
previous version. The note is definitely not in CSS 2.0, but there's no mention
of it being added in the Change appendix of the 2.1 spec.

Hmm, there seems to be a Mozilla bug. I was using generated content in the real
layout, and Moz won't let me position it like Konqueror will. It's behavior
matches when using real elements.

Don't know if this should be closed or not. Konq doesn't follow the spec, but
neither does anything else.

I think we do it correctly though. The spec is just not clear enough.
 We offset it from the outer padding-edge, I would call the inner padding-edge for the content edge