The most simple argument for them is that preprocessors can make CSS code more organized. With the power that comes from using variables and functions, lines can be shaved off CSS code and that means more readable code. This means that maintaining code will also be easier and in the long run it will be easier to edit.

What is the advantage of CSS preprocessor?

With CSS Preprocessor, you can add variables and functions brings a new dimension and scope to CSS which facilitates easier and efficient development. It also makes your code more organized and clean. CSS Preprocessors offers a special functionality of joining multiple stylesheets into one.

What is a CSS preprocessor when should it be used?

A CSS preprocessor is a program that lets you generate CSS from the preprocessor's own unique syntax. ... To use a CSS preprocessor, you must install a CSS compiler on your web server; Or use the CSS preprocessor to compile on the development environment, and then upload compiled CSS file to the web server.