vue-cli脚手架引element-ui时候总是报css文件错误

在webpack.config.js进行webpack加载器配置的时候，css加载器必须在js加载器前面，而且style-loader加载器必须在css-loader加载器前面

rules: [
            {
                test: /\.vue$/,
                loader: 'vue-loader',
                options: {
                    loaders: {}
                    // other vue-loader options go here
                }
            },
            // css加载器要在js加载器前面
            {
                test: /\.css$/,
             // style-loader加载器要在css-loader加载器前面
                loader: 'style-loader!css-loader'
            },
            {
                test: /\.js$/,
                loader: 'babel-loader',
                exclude: /node_modules/
            },
            {
                test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
                loader: 'file-loader'
            },
            {
                test: /\.(png|jpg|gif|svg)$/,
                loader: 'file-loader',
                options: {
                    name: '[name].[ext]?[hash]'
                }
            }
        ]
    },