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Flowbite is a set of UI components based on Tailwind CSS that can be used to speed up the development process. It uses utility classes instead of OOCSS or BEM and instead of a CSS preprocessing language it relies on PostCSS for transforming CSS.
Flowbite works with both CSS v2x and v3x versions within Flowbite. The full list of Flowbite components is available on Github and can be installed via NPM and included as a plugin inside a new or existing tailwind CSS project.