Bulma
Bulma is a free, open source CSS framework based on Flexbox and built with Sass. It.
About Bulma
Bulma is a free, open source CSS framework built on Flexbox for building responsive web interfaces from ready-to-use frontend components. It requires no JavaScript and no prior CSS knowledge, and is compiled with Dart Sass, allowing customization by setting Sass variables before importing the framework.
The framework includes a grid system based on columns (recommended at up to 12 per row, with support for nesting), CSS variables, and light, dark, and system-preference theming via a data-theme attribute. It is designed mobile-first and is distributed through GitHub as open source software.
Bulma is aimed at developers building responsive websites and interfaces who want a modular, component-based styling framework without a JavaScript dependency. The project accepts sponsorships to support its continued development.
Key features
- Flexbox-based responsive grid system with 12 columns
- Ready-to-use CSS components requiring no JavaScript
- Dark mode support via CSS variables or user preference
- Customizable through Sass variables before importing
- Mobile-first responsive design
Frequently asked questions
Is Bulma free to use?
Yes, Bulma is a free, open source CSS framework available on GitHub.
Does Bulma require JavaScript?
No, Bulma is CSS only, so it integrates into any JavaScript environment without imposing its own JS implementations.
How do you customize Bulma's styling?
You set your own Sass variables before importing Bulma's Sass folder to customize colors, fonts, and other design tokens.
Does Bulma support dark mode?
Yes, Bulma supports choosing a dark theme automatically or based on user preference using CSS variables.
Who is Bulma for?
It is aimed at developers who want to build responsive web interfaces using ready-to-use frontend components without needing deep CSS knowledge.
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