SCSS/SASS and LESS are a superset of CSS features with programmable.

SASS scripts can be specified in two types of syntax.

  • SCSS syntax
  • Indented Syntax

SCSS Syntax

scss is a superset of CSS, every style in CSS is valid in scss. a file extension is scss It uses brackets for blocks or functions, semicolons for end of line

$margin: 2px;

.leftsidenavigation {
  background-color: $color;

.rightsidenavigation {
  margin: $margin * 2;

The end of the line contains a semicolon, block, or multiple statements enclosed in brackets.

Indented Syntax in SASS

The file extension is sass

Instead of brackets, It uses indentation.

SASS example


  background-color: $color

  margin: $margin * 2

When compiled SASS/SCSS files, generated CSS output is

.leftsidenavigation {
  background-color: red;
  padding: 5px;

.rightsidenavigation {
  margin: 4px;

Difference between SASS and SCSS

Extension is SCSSExtension is SASS
Each line is ended by a semicolonSemicolon is not required, just include line break
Block of styles are enclosed in bracketsblock of styles are indentation by spaces
clean separation makes it easy to readMissing indent space breaks the overall style code