{
  "short_name": "Calendar",
  "name": "Calendar",
  "icons": [{
     "src": "favicon.png",
     "sizes": "64x64",
     "type": "image/png"
  }, {
    "src": "icon-512.png",
    "sizes": "512x512",
    "type": "image/png"
  }],
  "start_url": "/4a-calendar.php",
  "scope": "/",
  "background_color": "white",
  "theme_color": "white",
  "display": "standalone"
}