{
  "short_name": "Plus",
  "name": "PLUS",
  "icons": [
  {
    "src": "favicon.png",
    "sizes": "32x32",
    "type": "image/png"
  },
  {
    "src": "icon-192.png",
    "sizes": "192x192",
    "type": "image/png"
  },
  {
    "src": "icon-512.png",
    "sizes": "512x512",
    "type": "image/png"
  }
  ],
  "start_url": ".",
  "display": "standalone",  
  "theme_color": "#000000",
  "background_color": "#ffffff"
}