How to use variable in CSS? [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:开发者_JAVA技巧

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?

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

here's some comparison between both technologies.

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You need to use something like SASS

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

or Less

http://lesscss.org/

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There is a language written on top of CSS which make use of variables like you asked, it's called LessCSS