W3C home > Mailing lists > Public > www-style@w3.org > February 2005

Supporting propriety "Extensions"

From: David R <david@davidr.co.uk>
Date: Mon, 21 Feb 2005 23:54:04 +0000
Message-ID: <421A749C.9070402@davidr.co.uk>
To: www-style@w3.org

After having a quick look through the CSS3 spec, I can't see anything 
relating to the support of 3rd party and propriety "extensions" on the 

Rather than shun existing extensions, such as MSIE's "Behaviour:;" 
property, shouldn't there be some way to accomodate these within the 
spec provided they adhere to some kind of syntax?

I think the existing de-facto standard of prefixing non-standard 
properties with a hypthen works well enough as it is. Perhaps prefixing 
propriety selectors with a hyphen too?

I often use IE's "DirectX Filters" in my CSS to make the experience more 
aesthetically pleasing to IE users (but rest assured I don't make the 
site dependent on the effects provided), and I would like to continue 
exploiting these features well into CSS3 without causing the validator 
to throw an error.

-David R
Received on Monday, 21 February 2005 23:51:06 UTC

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