Less

Less is a dynamic preprocessor stylesheet language that extends CSS with features like variables, mixins, functions, and nesting, which compiles into standard CSS. It allows developers to write more maintainable and reusable stylesheets by adding programming-like capabilities to CSS syntax. Less runs on both client-side (in browsers via JavaScript) and server-side (using Node.js).

Also known as: Less CSS, Less.js, LESS, Less Preprocessor, Less Variables

Why learn Less?

Developers should learn Less when working on large-scale web projects where CSS maintenance becomes cumbersome, as it enables variables for consistent theming, mixins for code reuse, and nested rules for better organization. It's particularly useful in front-end development workflows integrated with build tools like Webpack or Gulp to automate compilation, improving productivity and reducing errors in styling.

Learning Resources

• docs: Less Official Documentation
• tutorial: Less CSS Tutorial for Beginners
• video: Learn Less in 10 Minutes
• course: Less Crash Course on Udemy