Grid layout, instructions (placeholder)

package.json

@@ -9,12 +9,16 @@
     "lint": "eslint .",
     "preview": "vite preview"
   },
+  "browserslist": [
+    "last 2 versions"
+  ],
   "dependencies": {
     "@emotion/styled": "^11.14.1",
     "@mui/icons-material": "^7.2.0",
     "@tanstack/react-query": "^5.82.0",
     "@tanstack/react-query-devtools": "^5.82.0",
     "d3": "^7.9.0",
+    "normalize-scss": "^8.0.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "sass": "^1.89.2"