How to define a CSS constant

I want to create a constant in my CSS file so that I can change all affected
properties in one place. For example, in order to provide alternative
schemes one might assign a constants "myfontsize", "myfontcolor". I thought
I'd seen something like @define somewhere but can't find anything about it
now. Can this be done and if so how please?

Cheers
Ian 


_________________________________________________________
This email is confidential and intended solely for the use of the 
individual to whom it is addressed. Any views or opinions presented are 
solely those of the author and do not necessarily represent those of 
SchlumbergerSema.
If you are not the intended recipient, be advised that you have received
this email in error and that any use, dissemination, forwarding, printing, 
or copying of this email is strictly prohibited.

If you have received this email in error please notify the
SchlumbergerSema Helpdesk by telephone on +44 (0) 121 627 5600.
_________________________________________________________

Received on Wednesday, 13 November 2002 14:19:27 UTC