{
 "icons": [
    { "src": "/icon-192.png", "type": "image/png", "sizes": "192x192" },
    { "src": "/icon-512.png", "type": "image/png", "sizes": "512x512" }
  ],
 "theme_color":"#ffffff",
 "background_color":"#ffffff",
 "display":"standalone"  
}