Tachyons CSS

Tachyons CSS is a functional CSS framework that provides a library of pre-built utility classes to speed up responsive web design. Rather than writing custom CSS from scratch, you use small, single-purpose classes in your HTML to style elements. It includes built-in support for responsive layouts, colour customisation, animations, and variable font sizing, making it straightforward to create consistent designs across different screen sizes. The framework is particularly useful if you prefer a utility-first approach to styling and want to avoid writing repetitive CSS. Tachyons is free and open source, with a small learning curve if you're accustomed to traditional CSS authoring.