App.js

class App extends Component {
  componentWillMount() {
    this.classes = this.props.location.pathname === '/' ?
      'page-container background-blue mobile-fix-height':
      'page-container';
  }

  render() {
    return (
      <div className={this.classes}>
		    <Header />
        {this.props.children}
        <Footer />
      </div>
    );
  }
}