Bulma

Another peculiar framework, Bulma is a CSS framework whose only output is a single CSS file that you can use as-is or customize to your liking. The goal of this framework is very simple – to provide you a way to easily work on the style layer that goes on top of the logic without having to use JavaScript anywhere.

Bulma is a free, open source framework that provides ready-to-use frontend components that you can easily combine to build responsive web interfaces.