altezze dinamiche in base al dispositivo

package.json

@@ -15,6 +15,7 @@
     "react-app-polyfill": "^0.1.3",
     "react-bootstrap": "^1.0.0-beta.2",
     "react-dom": "^16.6.1",
+    "react-height": "^3.0.0",
     "react-linkify": "^0.2.2",
     "react-router-dom": "^4.3.1",
     "react-scripts": "2.1.1",