I'm new to to React-Toolbox and I've just started it out by trying to create an AppBar for my website. I've gone on the official React-Toolbox website and tried to implement their App Bar code: http://react-toolbox.com/#/components/app_bar , but when that did not work I resorted to looking on forums. Here is my code :
    import React from 'react';
    import {ButtonStyle, LabelStyle, MainTitle, TitleColor, B_Nav_style} from './styles.jsx';
    import {EventHandle} from './Event_handler.jsx';
    import { AppBar, Checkbox, IconButton } from 'react-toolbox';
    import { Layout, NavDrawer, Panel, Sidebar } from 'react-toolbox';
    export const Navigation_Bar = () => (
    <ThemeProvider>
     <Layout>
        <Panel>
            <AppBar leftIcon='menu' />
                <div style={{ flex: 1, overflowY: 'auto', padding: '1.8rem' }}>
                    <h1>Main Content</h1>
                    <p>Main content goes here.</p>
                    <Checkbox label='Pin drawer'  />
                    <Checkbox label='Show sidebar' />
                </div>
        </Panel>
    </Layout>
</ThemeProvider> );
In my main.jsx I use a regular ReactDOM.render to render the Navigation_Bar after importing the Bar:
Meteor.startup(() => {
  ReactDOM.render(
    <Navigation_Bar/>, // when referencing a jsx element in reactDOM.render, make sure the first letter is capitalized so that it is not 
    //interpreted as html by jsx
  document.getElementById('main_body'));
});
And what I get is something like this :

In other words, the App Bar from React-Toolbox is not loading correctly (the background color is normal, it was defined somewhere else in the main.css). I have no errors or warnings in the browser so I suspect I must have forgotten to import something..
PS: the result I got from using the code on the official website was the same as the one I got in that picture
Any help is much appreciated!
Thanks! D.
 
    