Just dream that we are now assigning variables in the css layout. 
What an innovative idea ! It will be really a ease of web developers i think 
Thanks to Mr. Daniel Glazman (Disruptive Innovations) and David Hyatt (Apple, Inc.)
Since the release of CSS Level 2 Recommendation ten years ago in may 1998, the Web authors’ community has been requesting a way of defining variables in CSS. Variables allow to define stylesheet-wide values identified by a token and usable in all CSS declarations. If a value is often used in a stylesheet – a common example is the value of the color or background-color properties – it’s then easy to update the whole stylesheet statically or dynamically modifying just one variable instead of modifying all style rules applying the property/value pair. We expect CSS Variables to receive a very positive feedback from both the Web authors’ community and browser vendors.
Take look at disruptive-innovations.com
Source: Ajaxian
