{
   "short_name": "パチレコ",
   "name": "パチレコ",
   "icons": [
     {
       "src": "favicon1.png",
       "sizes": "64x64 32x32 24x24 16x16",
       "type": "image/png"
     },
     {
       "src": "favicon1.png",
       "type": "image/png",
       "sizes": "192x192"
     },
     {
       "src": "favicon1.png",
       "type": "image/png",
       "sizes": "512x512"
     }
   ],
   "start_url": ".",
   "display": "standalone",
   "theme_color": "#000000",
   "background_color": "#ffffff"
 }