Getting started

Since Pollen is built on plain CSS variables, it works everywhere. There's no buildstep or environment requirements. It works in plain CSS, other frameworks, and CSS-in-JS.


Install Pollen from NPM and include it in your project

npm i pollen-css
import 'pollen-css';

Alternatively include from a CDN

You can also link Pollen's CSS directly from the Unpkg CDN

<link rel="stylesheet" href="" />

The entire library weighs under 1.5kb, so there's no need to worry about how you bundle or optimise it.


Once Pollen is included in your project, you can use its variables anywhere in your styles

.button {
font: var(--font-sans);
padding: var(--size-1);
border-radius: var(--radius-2);
color: var(--color-primary);
:root {
--color-primary: var(--color-blue);

Shimming IE

Pollen requires a small shim to work in Internet Explorer, as it doesn't support the CSS variables that the library is built on.

Enable IE support with the included shimmie utility from pollen-css/utils

import { shimmie } from 'pollen-css/utils';

Shimmie will check for support, and if required dynamically load and apply the excellent css-vars-ponfyill shim with sane configuration.

Editor Support

For autocomplete support of all of Pollen's variables in VS Code:

  1. Install the CSS Var Complete extension

  2. Add Pollen to the extension's file settings in .vscode/settings.json

  3. If you've extended Pollen make sure you also include your variables stylesheet

  4. If you're using CSS-in-JS make sure you add javascript/javascriptreact/typescriptreact file support to the extension's settings

"cssvar.files": [
"./styles/variables.css" // Your theme file
// CSS-in-JS support
"cssvar.extensions": ["css", "javascript", "typescriptreact"]

Autocomplete will then be available for all properties. Intellisense will trigger simply with --, no need to also add var(.