ref: #187 update 09 webpack

Author: lokeeto

hooks/09_Sidebar/webpack.config.js

@@ -33,6 +33,11 @@ module.exports = {
           useBabel: true,
           babelCore: "@babel/core", // needed for Babel v7
         },
+      },	
+      {	
+        test: /\.css$/,	
+        include: /node_modules/,	
+        use: [MiniCssExtractPlugin.loader, "css-loader"]	
       },
       {
         test: /\.css$/,