message: this is a dev dependency
diff: "postcss-flexbugs-fixes": "^3.2.0",
  "postcss-loader": "^2.0.6",
  "react-hot-loader": "^3.0.0-beta.7",
  + "style-loader": "^0.18.2",
  "url-loader": "^0.5.9",
  "web-ext": "^2.2.2",
  "webpack": "^3.5.6",
  "react-transition-group": "^2.2.1",
  "scroll-into-view-if-needed": "^1.4.0",
  "sort-array": "^2.0.0",
  - "style-loader": "^0.18.2",
  "styled-components": "^2.1.2",
  "ua-parser-js": "^0.7.17",
  "uuid": "^3.1.0",
  