PrimeFlex is a lightweight responsive CSS utility library to accompany Prime UI libraries and static web pages. With version 3.0, PrimeFlex has been rewritten from the ground up to be a fully-featured utility library for the PrimeFaces, PrimeNG, PrimeReact, PrimeVue and the upcoming PrimeBlocks project.

PrimeFlex has various utilities to offer, visit the project website for documentation and examples.