How to use variable in CSS? [duplicate]

Question

Possible Duplicate:
Create a variable in .CSS file for use within that .CSS file

I heard about that we can declare/define variable in CSS and use them like global variables like this:

@nice-blue: #5B83AD;  #header { color: @nice-blue; } 

So anyone knows how to use them?

Answer 1

For that you need to use Less or Sass which are CSS Dynamic languages.

here's some comparison between both technologies.

Answer 2

You need to use something like SASS

http://sass-lang.com/#variables

or Less

http://lesscss.org/