diff --git a/config/config.js b/config/config.js
index 280f0c9e..d86bc928 100644
--- a/config/config.js
+++ b/config/config.js
@@ -90,4 +90,7 @@ export default {
   },
 
   chainWebpack: webpackplugin,
+  cssnano: {
+    mergeRules: false,
+  },
 };