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RE: column-span and margin-collapsing (was: [CSSWG] Minutes and Resolutions 2011-09-21)

From: Håkon Wium Lie <howcome@opera.com>
Date: Mon, 26 Sep 2011 19:11:14 +0200
Message-ID: <20096.45618.969267.508492@gargle.gargle.HOWL>
To: Alex Mogilevsky <alexmog@microsoft.com>
Cc: Håkon Wium Lie <howcome@opera.com>, fantasai <fantasai.lists@inkedblade.net>, "www-style@w3.org" <www-style@w3.org>
Also sprach Alex Mogilevsky:

 > ± Spanners collapse vertically, just like these BFC-creating elements
 > ± do:
 > ± 
 > ±    <div style="overflow: hidden; margin: 100px 0;"></div> 
 > ±    <div style="overflow: hidden; margin: 100px 0;"></div>
 > 
 > But this behavior is different for what one would expect for what
 > appeared to be your main use case:
 > 
 > 	<h1 style="column-span:all">Title</h1>	
 > 	<h2 style="column-span:all">Subtitle</h2>	
 > 	<p style="column-span:all">Abstract...</p>

I don't understand why it's different; in Opera's implementation,
collapsing would occur in both examples. And float crossing would not
occur in any of them.

-h&kon
              Håkon Wium Lie                          CTO °þe®ª
howcome@opera.com                  http://people.opera.com/howcome
Received on Monday, 26 September 2011 17:11:59 GMT

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