Stylus
Stylus is a preprocessor that aims to be more flexible and feature-rich. Syntax is minimalistic and indentation-based. It also supports variables, nesting, and a wide range of functions.
What are CSS preprocessors?
CSS preprocessors are tools that extend the functionality of CSS by introducing features like variables, nesting, and mixins. They enhance the maintainability and organization of stylesheets. Here are some popular CSS preprocessors: