CSS is a powerful language used for making creative and attractive websites. Sassy CSS (SCSS) adds some powerful benefit to CSS that makes it more fantastic language by extending CSS and adding great features such as variables, mixins, nesting and much more. SCSS extension, i.e, file ending with “.scss” allows for more concise styling along with CSS. SCSS is the syntax for Sass. Every valid CSS3 stylesheet is a valid SCSS file with the same meaning and it extends all the features and functionality of CSS.