{
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    "description": "Falling blocks",
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          "sizes": "512x512",
          "type": "image/png"
      }
    ],
    "start_url": "index.html",
    "background_color": "#212529",
    "display": "standalone",
    "scope": ".",
    "theme_color": "#212529",
    "shortcuts": [
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        "name": "Quatris",
        "short_name": "Quatris",
        "description": "Falling blocks",
        "url": "index.html",
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