React Base Fiddle (JSX)

Starting point for creating JSFiddles with React.

HTML

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/electron-css@0.14.4/dist/index.js">
</script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

<!-- Please `RUN` the example -->

Babel + JSX

const CSS = ElectronCSS.CSS;
const MediaQuery = ElectronCSS.MediaQuery;
const {px} = ElectronCSS.units;
const color = ElectronCSS.color;

const mobileOnly = MediaQuery({
    maxWidth: px(480),
    maxHeight: px(720)
})

const someStyle = CSS({
    [mobileOnly]: {
        color: color.darken(color.red, 0.5)
    }
}, "somestyle");

class MyComp extends React.Component {
    render() {
        return <div className={someStyle}>
            Hello {mobileOnly() ? 'Mobile' : 'Desktop'}
        </div>;
    }
}

ReactDOM.render(
  <MyComp />,
  document.getElementById('container')
);