Issue #3197155: dependencies vs devDependencies strategy.

package.json

@@ -11,13 +11,11 @@
     "production": "cross-env NODE_ENV=production postcss $npm_package_config_inputFile -o $npm_package_config_outputFile",
     "watch": "cross-env NODE_ENV=development postcss $npm_package_config_inputFile -o $npm_package_config_outputFile --watch"
   },
-  "dependencies": {
-    "postcss": "^8.2.4",
-    "tailwindcss": "^1.9.6"
-  },
   "devDependencies": {
     "cross-env": "^5.2.1",
     "cssnano": "^4.1.10",
-    "postcss-cli": "^8.3.0"
+    "postcss-cli": "^8.3.0",
+    "postcss": "^8.2.4",
+    "tailwindcss": "^1.9.6"
   }
 }