Issue #3143407 by VladimirAus: Fix CSS compilation according to Drupal standards

package.json

@@ -5,9 +5,13 @@
   "main": "index.js",
   "scripts": {
     "lint:sass": "sass-lint -c .sass-lint.yml --verbose",
-    "build:sass": "sass --style=expanded scss/style.scss css/style.css"
+    "build:sass": "node-sass --recursive --output css --output-style expanded --source-map true scss/style.scss css/style.css",
+    "build:sass:4.5.0": "node-sass --recursive --output css --output-style expanded --source-map true scss/style-4-5-0.scss css/style-4-5-0.css",
+    "build:dart:sass": "sass --style=expanded scss/style.scss css/style.css",
+    "build:dart:sass:4.5.0": "sass --style=expanded scss/style-4-5-0.scss css/style-4-5-0.css"
   },
   "devDependencies": {
+    "node-sass": "^4.14.1",
     "prettier": "^1.19.1",
     "sass-lint": "^1.13.1"
   },
@@ -20,6 +24,17 @@
     "theme",
     "bootstrap"
   ],
-  "author": "V Roudakov",
-  "license": "ISC"
+  "author": [
+    {
+      "name": "Vladimir R",
+      "email": "info@tomato-elephant-studio.com",
+      "url": "https://www.drupal.org/u/vladimiraus"
+    },
+    {
+      "name": "Janna M",
+      "email": "info@tomato-elephant-studio.com",
+      "url": "https://www.drupal.org/u/JannaKha"
+    }
+  ],
+  "license": "MIT"
 }