W3C home > Mailing lists > Public > www-style@w3.org > February 2011

Inconsistent position:relative behaviour

From: Markus Ernst <derernst@gmx.ch>
Date: Sat, 12 Feb 2011 14:17:01 +0100
Message-ID: <20110212131701.193480@gmx.net>
To: www-style list <www-style@w3.org>
When trying to realize given designs with CSS techniques I often run into a strange problem which I consider most annoying; actually I thought it was a bug, but current versions of Firefox, IE, Chrome and Opera all behave the same:

If a container element with position:relative contains a child element with position:static and a margin, and some other children with position:absolute, then the reference point for the positioning moves vertically (but not horizontally) with the margin of the static element. Furthermore, the background of the container is vertically cropped to the margin of the child element. Strange enough: this issue disappears, when adding a border to the container element!

Please view the test case I made:
http://www.markusernst.ch/stuff_for_the_world/css-position-test.html

Is this a bug? Then I'd suggest to discuss a way how to get rid of it without breaking legacy content that might rely on it.

Or is there some sensible reason for this behavior? Then I'd suggest to add a possibility to allow margins for children of elements with position:relative without affecting the positioning reference and background of the container.
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Received on Saturday, 12 February 2011 14:17:37 GMT

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