Frequently Asked Questions
General questions about Fylgja as a whole. For questions about a specific package or component, see that package's own docs page, each one has its own FAQ too.
Do I need to install every Fylgja package, or can I use just one?
You can use just one. Base, Tokens, Utilities, and Components are independent packages, install only the ones you need. The meta fylgja package is just a convenience for installing the three core ones together.
Is Fylgja a framework, or something else?
Fylgja is a library, a toolkit of independent packages (Base, Tokens, Utilities, and Components) that you assemble yourself, not a framework you opt into as one system.
What makes Fylgja different from frameworks like Tailwind CSS or Bootstrap?
Mainly three things: a classless base that styles plain HTML directly without adding classes, Dynamic CSS Utilities that use CSS variables instead of generating a new class for every value, and components built around native HTML and ARIA attributes rather than heavy class-based structures.
Do I need a build step to use Fylgja?
No, you can link the CSS from a CDN or copy files into your project with npx fylgja@latest add, no bundler required. A build step mainly helps with bundling and minifying your CSS, and unlocks easier token customization, but isn't required to get started.
Will Fylgja's styles conflict with my own custom CSS?
It's designed not to. Fylgja is built with low CSS specificity, and Base in particular uses :where() to keep specificity at zero, so your own styles override it without a fight.
Can I use Fylgja alongside Tailwind CSS or another utility framework?
Yes, Fylgja Utilities are designed to complement other utility systems rather than replace them. If a utility already exists in your system, use that one, Fylgja adds the utilities that are unique to it.
Is Fylgja accessible out of the box?
Yes. All Fylgja packages are built with accessibility in mind, and it favors semantic HTML attributes, like aria-current, for state instead of relying only on class names.
Does Fylgja support right-to-left languages?
Yes, automatically. Set dir="rtl" on your html element and Fylgja mirrors the layout, no extra CSS or RTL-prefixed classes needed.