SASS is CSS with superpowers

Sass is the most mature, stable, and powerful professional grade CSS extension language in the world.

In short

• SASS stands for Syntactically Awesome Style Sheers
• It is an extension to CSS providing it with more features
• Browsers can’t read SASS hence it has to be compiled to CSS (we will be using node-sass to compile it)
• SASS is a pre-processor scripting language that will be compiled or interpreted into CSS. SASS is itself a scripting language whereas SCSS is the main syntax for the SASS which builds on top of the existing CSS syntax.
• SASS follows strict indentation, SCSS has no strict indentation.
• SASS has a loose syntax with white space and no semicolons, the SCSS resembles more to CSS style and use of semicolons and braces are mandatory.
• SASS file extension is .sass and SCSS file extension is .scss.