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''