{
  "background_color": "orange",
  "description": "Maintenance portal",
  "display": "fullscreen",
  "icons": [
    {
      "src": "icon.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "name": "Maintenance portal",
  "short_name": "Maintenance",
  "start_url": "/index.php",
  "theme_color":"orange"
}