fix missing normalize.css

Author: mansona

package.json

@@ -87,6 +87,7 @@
     "highcharts": "^10.1.0",
     "leaflet": "^1.5.1",
     "loader.js": "^4.7.0",
+    "normalize.css": "^8.0.1",
     "npm-run-all": "^4.1.5",
     "prember": "^1.0.3",
     "prettier": "^2.5.1",