Sass for Web Designers

The use of mixins with arguments really shines in CSS3, where we often repeat vendor-prefixed rules throughout the stylesheet to achieve rounded corners, drop shadows, gradients, transitions, etc.

Commenting can be frequent and detailed without the worry of adding extraneous bloat to the CSS output.

Single-line comments use the // prefix at the beginning of each line and aren’t included in the final output, so you can safely use them for private comments