A deep dive into CSS Module

CSS Modules offer a solution to common CSS issues by scoping class and animation names locally, which helps avoid problems such as name collisions, dead code, and complex dependency management that arise with global CSS selectors. Unlike conventional CSS, where all selectors are global, CSS Modules provide a layer of abstraction that makes it easier to manage styles in large applications, especially when multiple developers are involved. This tutorial outlines the integration of CSS Modules into a React application, highlighting how it helps automate naming and manage dependencies effectively. It contrasts CSS Modules with the BEM naming convention, explaining that while BEM provides structure with strict naming rules, it can be tedious and error-prone, whereas CSS Modules automate the process by dynamically generating unique class names. The tutorial includes a practical example of implementing CSS Modules in a React app, showcasing their ability to simplify styling through features like composition, where classes inherit styles from other classes. CSS Modules compile to ICSS, a low-level format that enhances CSS, and are supported by modern tools like webpack, which handle cross-language dependencies, making CSS Modules a powerful improvement to the CSS language.