diff --git a/webpack.config.js b/webpack.config.js
index 0554c92..c01112e 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -51,7 +51,7 @@ module.exports = [
             new CopyWebpackPlugin([
                 {
                     context: 'src/playground',
-                    from: '*'
+                    from: '*.+(html|css)'
                 }
             ])
         ])