Using following webpack config I am trying to minify css in entry point entry.js.The entry.js has only require('mystyles.css')

```
var ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports = {
    entry:'entry.js',
    module: {
        loaders: [
            { test: /\.css$/, loader: ExtractTextPlugin.extract("style-loader", "css-loader") }
        ]
    },
    plugins: [
        new ExtractTextPlugin("styles.css")
    ]
}

```

mystyles.css has following css

```
.body { background: #000;  }

```

On running webpack I am getting following error

```
Line 1: Unexpected token .
You may need an appropriate loader to handle this file type.

```

Please let me know which loader I have to use to get all .css files into single styles.css file