webpack加载不了css解决办法

module:{
 loaders: [
 {
 test: /\.jsx?$/,
 exclude: /node_modules/,
 loader: 'babel',
 },
 
 { 
 test: '/\.css$/', 
 loaders: ['style', 'css'],
 include: __dirname,
 },
 ],
 },

./app/stylesheets/all.css
Module parse failed: D:\FrontEnd\mzFM-web\app\stylesheets\all.css Unexpected token (1:11)
You may need an appropriate loader to handle this file type.
SyntaxError: Unexpected token (1:11)

原来test:'/\.css$/'这里写错了。
应该是test:/\.css$/ 不带''