W3C home > Mailing lists > Public > www-style@w3.org > February 2012

Re: [css3-values] Physical length units

From: Felix Miata <mrmazda@earthlink.net>
Date: Sun, 19 Feb 2012 23:48:40 -0500
Message-ID: <4F41D0A8.3080904@earthlink.net>
To: www-style@w3.org
On 2012/02/19 23:58 (GMT+0200) Lea Verou composed:

> 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

A truly sad state. :-(

> ems to increase or decrease it as necessary. That root font-size would
> be much better off with truemm.

On the contrary. Both absolute sizes and px sizes completely disregard user 
environment and settings. There's no material difference in how bad either 
are compared to the other. They're different to be sure, but both bad. Except 
for those still supporting antique M$ browsers, most of the remaining time, 
there is no valid reason to set _any_ size on the root, which leaves the 
visitors' defaults defining 1rem, presumptively ideal in their environments.

> 8mm (physical mm) is always 8mm so if 8mm is sufficient to make
> type legible in one screen, it will be in all screens. 30 (device)
> pixels on the other hand might be legible in a screen with a certain dpi
> and too small in another, high-res screen.

Wrong again. You have no more idea the relationship between 8truemm and the 
user's default than you do between 23px and the user's default (the 
presumptive ideal size).
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/
Received on Monday, 20 February 2012 04:49:04 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 17:20:50 GMT