What Does Syntactically Awesome Stylesheets (Sass) Mean?
Syntactically Awesome Stylesheets (Sass) is an extension to Cascading Style Sheets (CSS) that adds more features, stability and depth on top of CSS. It differs from CSS in that it supports variables, nested rules, inline imports, mixins and inheritances.
Techopedia Explains Syntactically Awesome Stylesheets (Sass)
Sass is an advanced variant of CSS that is completely compatible with all versions of CSS. It uses Sass Script as the scripting language.
Sass uses two different syntaxes. Its original syntax, the indented syntax, uses indentation to separate blocks and newline characters. The new syntax, SCSS, uses code blocks and semicolons to differentiate between lines in a block.
Compass, Bourbon and Susy are some of the frameworks built for Sass.