{
  "name": "我是题库王",
  "short_name": "题库",
  "description": "开刷",
  "theme_color": "#39C5BB",
  "icons": [
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      "src": "images/icon-128.png",
      "type": "image/png",
      "purpose": "any maskable",
      "sizes": "128x128" 
    },
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      "src": "images/icon-192.png",
      "type": "image/png",
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      "sizes": "192x192" 
    },
    {
      "src": "images/icon-512.png",
      "type": "image/png",
      "purpose": "any maskable",  
      "sizes": "512x512" 
    }
  ],
  "start_url": "/index.html",
  "display": "standalone",
  "background_color": "#fff"
}