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Re: User Agents Do Not Implement Absolute Length Units, Places Responsive Design in Jeopardy

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Wed, 05 Oct 2011 12:18:06 -0400
Message-ID: <4E8C833E.7030108@mit.edu>
To: www-style@w3.org
On 10/5/11 12:02 PM, Fran├žois REMY wrote:
> The problem is that you may want to rely on the "device size" to know if
> you need to show a "Mobile optimized" website, a "Tablet optimized
> website" or a "plain old website". That depends on the phyical size of
> the device

Maybe.  Does it depend on the physical size, or the visual angle 
subtended by the device?

The visual angle corresponds to the number of _CSS_ pixels, which are 
what media queries can measure.

 > You can get a tablet of 7inches
> having as much pixels as an iPhone 5 in landscape mode.

CSS pixels or device pixels?

-Boris
Received on Wednesday, 5 October 2011 16:18:44 GMT

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