# Huh?
So basically [FlowType](http://flowtype.org) doesn't know about [CSS Modules](https://github.com/webpack/css-loader/#css-modules), a really handy way of dealing with the plagues of CSS in codebases (global variables and dependency wackiness mainly).
What WebPack allows us to do is "require" CSS files and use their class names:
```js
import styles from "my_styles.css";
import React from "react";
const MyComponent = React.createClass({
render() {
return <h1 className={styles.redHeader}>Hello!</h1>;
}
});
```
Unfortunately, Flow will give us an error `Required module not found` because, well, let's be honest, importing CSS with JavaScript is pretty out of this world and a little bit crazy (i.e: [this](http://media0.giphy.com/media/NbgeJftsErO5q/giphy.gif)).
So here's what I did to fix that. Flow has a nice way of dealing with this in its options, namely one called `module.name_mapper`. Somebody was kind enough to make an npm module called `empty` that– you guessed it– returns empty objects and arrays. I'm pretty amazed to have found a use for this.
So as a fix, do this:
Run `npm install --save empty` in your project directory.
Open your `.flowconfig`, and add the following under `[options]`:
```
module.name_mapper='.*\(.css\)' -> 'empty/object'
```
Ta-da! Another fun day in JavaScript land.