{
  "name": "Margin Calc",
  "short_name": "Margin",
  "start_url": "index.html",
  "display": "standalone",
  "background_color": "#f8f9fa",
  "theme_color": "#007bff",
  "launch_handler": {
    "client_mode": "focus-existing"
  },
  "icons": [
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      "sizes": "512x512",
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}