How to import css in webpack react project

webpack.config.js

module.exports = {
	entry:  __dirname + "/app/Main.js",
	output: {
		path: __dirname + "/public",
		filename: "bundle.js"
	},
	module: {
		loaders: [
		    {
                test: /\.jsx?$/,
                loader: 'babel',
                query:{
                    cacheDirectory: true,
                    presets: ['react','es2015']
                }
            }, {
                test: /\.css$/,
                loader: 'style!css',
                use: [ 'style-loader', 'css-loader' ]
            }
        ]
	}
};