Awesome Open Source
Awesome Open Source


Functional css generator

Build Status npm

Functional css ( la tachyons), but customizable for your project's visual language. No more rewriting long stylesheets to include your colours, typefaces, and spacing scale!


  • flexible: easily define colors, type styles, spacing scales
  • performant: only generates the breakpoints/variables you need (default kit is 3kb, compared to 14kb+ for tachyons)
  • simple: spits out a css string, no fancy client-side work needed
  • just javascript: integrates well with css-in-js, easy to extend, automate documentation, etc.

🚧 This project is still v0.x.x and the API is subject to change.


npm install hibiscss --save

Getting Started

For a quick start, use the default rule kit. You can pass in options to define your projects visual language:

import hibiscss from 'hibiscss';
import kit from 'hibiscss/default';

const styles = hibiscss(kit({
  colors: {
    pink: '#ffb7b3',
    black: '#141414'
  fontFamily: {
    work: 'Work Sans, sans-serif'
  fontSize: [36, 24, 19, 17, 15, 12]

Then use the classes like so:

<div class="c-pink ff-work fs-2">Work Sans in pink at 24px!</div>

Yay! 🎉 Check out the examples or default kit docs for more!


Hibiscss returns a string of css. You can integrate it with your build system however you'd like. I find the easiest is to spit out a static css file, like so:

Make a file with your config and output it to console.log, like so:

// css.js

import hibiscss from 'hibscss';
import tachyons from 'hibscss/tachyons';

const styles = hibiscss(tachyons());


Then add a package.json script to generate the styles:

  "scripts": {
    "build-css": "node css.js > /path/to/styles.css"

Run npm run build-css to create your styles, and re-run whenever you make changes to your kit.


Hibiscss generates css using kits, presets that map your visual language to functional css styles. Hibiscss comes with two kits bundled into the package:

  • default (docs): small, highly customizable kit
  • tachyons (docs): familiar tachyons-like classes

Kits are functions which take options, and return css rules for hibiscss to generate. For example, using the default kit:

import hibiscss from 'hibiscss';
import kit from 'hibiscss/default';

const config = {
  spacing: [0, 8, 16, 24, 48, 64],
  colors: { rausch: '#ff5a5f', foggy: '#767676' },
  fontSize: { title: 44, large: 24, regular: 19 },
  fontWeight: { light: 300, regular: 400, semibold: 600 }

const rules = kit(config);
const css = hibiscss(rules);

Will give you classes like:

<div class="c-foggy mh-2 mh-4-m fs-title fw-semibold">Semibold and large</div>

Kits let you customize everything whether you can adjust line heights to how verbose the class names should be (eg. mh-2 vs. marginHorizontal-2).

Making a custom kit

If you'd like fine-grained control over the final css, you can write your own kit. Kits are simply a function that returns a set of rules, created with the rule helper function.

Check out the custom kit example, or read the API docs to learn more.


functional css makes css a lot of fun, but many of the toolkits out there are difficult to customize.

I found myself manually editing tachyons colours, typefaces, and breakpoints more times than Id like. So I built hibiscss to provide a simple structure for quickly generating functional css frameworks.

See also

Lots of prior art in the functional css area:

Hibiscss pairs nicely with:



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