Ems are actually standard units that are based on what
font size your browser is set to (in some browsers),
in combination with the "font-size" property in your
CSS.

While this may correspond to the actual width of an
"m" in a font, any such correspondence is merely
coincidental -- the font type has nothing to do with
the unit "em" as it relates to CSS.

I did whip up a page that shows a rough scale of ems
for different browser variables that might help you:

http://www.themaninblue.com/writing/perspective/2004/05/27/

http://www.themaninblue.com/experiment/emWidths/

Regards,
--
Cameron Adams

W: www.themaninblue.com


--- Nick Gleitzman <[EMAIL PROTECTED]> wrote:
> 
> On Monday, June 21, 2004, at 05:11  PM, Michael
> Andrews wrote:
> 
> An 'em' is different from font to font - it refers
> to the width of a 
> character, and the same character is a different
> width in different 
> fonts. Ems are proportional measurements.


                
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