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Re: [css3-values] Physical length units

From: Robert O'Callahan <robert@ocallahan.org>
Date: Mon, 20 Feb 2012 12:08:39 +1300
Message-ID: <CAOp6jLZjZ9XWumjXnsrHzi+EG51TmTx40DuimduUgGj=Rq3_zg@mail.gmail.com>
To: Lea Verou <leaverou@gmail.com>
Cc: Charles Pritchard <chuck@jumis.com>, Felix Miata <mrmazda@earthlink.net>, www-style@w3.org
On Mon, Feb 20, 2012 at 10:58 AM, Lea Verou <leaverou@gmail.com> wrote:

> I wasn't implying that truemm will replace ems. But when most authors use
> ems, they still define the root font-size in pixels, and then use ems to
> increase or decrease it as necessary. That root font-size would be much
> better off with truemm.

No, that's a surefire way to write pages that are unusable across different
kinds of devices.

The only use-cases for truemm are when you need content matching the size
of some real-world object, e.g. a ruler, or a life-size image, or a human
fingertip. That's it.

Ask yourself, "do I really want this content to be the same physical size
on a phone and a wall projector?" If the answer is yes, use truemm,
otherwise don't.

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doing that? And if you greet only your own people, what are you doing more
than others?" [Matthew 5:43-47]
Received on Sunday, 19 February 2012 23:09:06 UTC

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