Re: Technique 3.4.1 Check document for relative units of measure

We suggest that they use .3 em and realise that under current implementations
they may not get their desired effect. Which is not ideal, and I imagine that
in practice they will use pixel sizes.

specifying 3em if they don't want something 3em is clearly wrong.

Do you have a test page we could use for a few more browsers?

Charles

On Thu, 28 Sep 2000, Chris Ridpath wrote:

  So what do we suggest that the author use to set the border size? If they
  want a thick border and specify 3em that will work fine now. But when the
  browsers implement em size properly, the 3ems will be much too large.
  
  Chris
  
  ----- Original Message -----
  From: "Charles McCathieNevile" <charles@w3.org>
  To: "Chris Ridpath" <chris.ridpath@utoronto.ca>
  Cc: "WAI ER IG List" <w3c-wai-er-ig@w3.org>
  Sent: Thursday, September 28, 2000 11:55 AM
  Subject: Re: Technique 3.4.1 Check document for relative units of measure
  
  
  > Which is not the greatest implmentation I can think of, although I can see
  > that it is quick to implement (i.e. just take all units as pixel units...)
  > but doesn't make it a bad idea to use relative units as far as I can see.
  >
  > Chaals
  >
  > On Thu, 28 Sep 2000, Chris Ridpath wrote:
  >
  >   I just tried a test table with Netscape 4.7 and IE5. Both browsers
  exhibit
  >   the same behaviour.
  >
  >   Any table border size 1em or less shows up the same as a 1 pixel border,
  >   independent of the document font size.
  >   A table border of 2em displays the same as a 2 pixel border, independent
  of
  >   the document font size.
  >   A table border of 3em displays the same as a 3 pixel border, independent
  of
  >   the document font size.
  >
  >   So it appears that the browsers ignore the relative 'em' size and
  convert
  >   the border to an absolute number.
  >
  >   Chris
  >
  >   ----- Original Message -----
  >   From: "Charles McCathieNevile" <charles@w3.org>
  >   To: "Chris Ridpath" <chris.ridpath@utoronto.ca>
  >   Cc: "WAI ER IG List" <w3c-wai-er-ig@w3.org>
  >   Sent: Friday, September 22, 2000 9:15 AM
  >   Subject: Re: Technique 3.4.1 Check document for relative units of
  measure
  >
  >
  >   > .1 em is a good size. For someone who is using a very large fot so
  they
  >   can
  >   > see it, a 2px border may just disappear, but a .1 em border will still
  be
  >   > visible.
  >   >
  >   > Charles McCN
  >   >
  >   > On Wed, 20 Sep 2000, Chris Ridpath wrote:
  >   >
  >   >   Could the 'border' attribute be an exception to this rule? It's a
  common
  >   >   practice to use 1 or 2 for a table/image/frame border to indicate
  that
  >   there
  >   >   should be some sort of thin line surrounding the object. If we do
  >   require a
  >   >   relative measure for a border, what would it be? (I think that an
  'em'
  >   or
  >   >   'ex' would be too large to replace a 1 pixel border.)
  >   >
  >   >   Chris
  >   >
  >   >
  >   >
  >   > --
  >   > Charles McCathieNevile    mailto:charles@w3.org    phone: +61 (0) 409
  134
  >   136
  >   > W3C Web Accessibility Initiative
  >   http://www.w3.org/WAI
  >   > Location: I-cubed, 110 Victoria Street, Carlton VIC 3053, Australia
  >   > September - November 2000:
  >   > W3C INRIA, 2004 Route des Lucioles, BP 93, 06902 Sophia Antipolis
  Cedex,
  >   France
  >   >
  >
  >
  > --
  > Charles McCathieNevile    mailto:charles@w3.org    phone: +61 (0) 409 134
  136
  > W3C Web Accessibility Initiative
  http://www.w3.org/WAI
  > Location: I-cubed, 110 Victoria Street, Carlton VIC 3053, Australia
  > September - November 2000:
  > W3C INRIA, 2004 Route des Lucioles, BP 93, 06902 Sophia Antipolis Cedex,
  France
  >
  

-- 
Charles McCathieNevile    mailto:charles@w3.org    phone: +61 (0) 409 134 136
W3C Web Accessibility Initiative                      http://www.w3.org/WAI
Location: I-cubed, 110 Victoria Street, Carlton VIC 3053, Australia
September - November 2000: 
W3C INRIA, 2004 Route des Lucioles, BP 93, 06902 Sophia Antipolis Cedex, France

Received on Thursday, 28 September 2000 12:19:49 UTC