Lumo CSS Framework (Legacy)

The `lumo-css-framework` package provides a set of utility-first CSS classes and foundational styles derived from Vaadin's Lumo design system. It was designed to help developers build web applications with a consistent Vaadin Lumo theme, offering customizable style properties like colors, fonts, sizing, spacing, and icons, along with dark and compact variants. While this specific npm package (version 4.0.10, last updated over five years ago) saw use in older Vaadin projects (pre-Vaadin 20), it is now considered deprecated. For current Vaadin applications (Vaadin 20+), the utility classes and Lumo theme are either built directly into the Vaadin framework or available through the actively maintained `@vaadin/vaadin-lumo-styles` package, which is part of the broader `web-components` monorepository and receives regular updates (current stable version 24.10.0). Users are strongly advised against using this standalone `lumo-css-framework` package for new projects or upgrading existing ones, and should instead rely on the integrated Vaadin theming or `@vaadin/vaadin-lumo-styles` for web component-based projects. Key differentiators of Lumo include its deep integration with Vaadin components, robust CSS custom property system for theming, and comprehensive set of utility classes for flexible layouting, which conform to some Tailwind CSS patterns.