When building a website, using a CSS framework is a real time saver as it provides you with tools every web designer needs when crafting a site. But as you know, loading speed is a very important quality factor. Therefore, I have compiled an actualized list of the current top 10 lightweight CSS frameworks, for creating beautiful, functional, and super fast loading websites. Pure CSS Only 3.8KB minified and gzipped, but packed with features! Pure CSS has been my lightweight framework of choice for years now, including when working with an outsourcing software development team.