Simon Willison’s Weblog

Why weren’t the features of Sass originally built into CSS?

This is not a straight-forward issue: CSS has a very long, complicated history. A good starting point for understanding the reluctance of the CSS working group to add variables/constants etc to CSS is this essay by Bert Bos of the W3C (entitled Why “variables” in CSS are harmful) http://www.w3.org/People/Bos/CSS...