postcss-modules-local-by-default enhances CSS Modules by setting :local as the default scoping behavior. It eliminates the need to explicitly define :local for each rule, streamlining your CSS writing. This plugin promotes component-level encapsulation by ensuring styles are, by default, local to the module, reducing unintended style pollution and improving maintainability. Use :global to explicitly define global styles, offering flexibility while maintaining a strong emphasis on modularity.