W3C home > Mailing lists > Public > www-style@w3.org > January 2008

Re: positioned elements: center

From: David Woolley <forums@david-woolley.me.uk>
Date: Mon, 07 Jan 2008 23:01:45 +0000
Message-ID: <4782AF59.20407@david-woolley.me.uk>
To: CSS Style <www-style@w3.org>

Thomas Davie wrote:

> Not meaning to be offensive to anyone, but perhaps that should indicate 
> a shortcoming in the language design if people regularly {can't do this 
> | feel this needs improving} (delete as appropriate)

As a general principle, it tends to happen because people, who often 
haven't read the standards, keep re-inventing things that break 
fundamental design principles.

My guess, in the case of vertical centering, the problem is that it 
breaks incremental rendering.  Breaches are allowed, but most of the 
current ones are in areas that would only be used by experts, who, 
presumably can make a reasoned decision as to whether the effect 
justifies the loss of incremental rendering.  Vertical centering would 
almost certainly result in a large proportion of pages using it and 
therefore break incremental rendering on a large scale.

David Woolley
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Received on Monday, 7 January 2008 23:02:16 UTC

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