add style lodaer

Author: leaves4j

package-lock.json

@@ -77,6 +77,7 @@
     "flow-remove-types": "^1.2.1",
     "mocha": "^3.2.0",
     "nyc": "^11.0.3",
+    "style-loader": "^0.18.2",
     "vue": "^2.4.2",
     "vue-loader": "^13.0.2",
     "vue-router": "^2.7.0",