{
  "short_name": "Thi Trắc Nghiệm",
  "name": "TRAC NGHIEM",
  "icons": [],
  "start_url": ".",
  "display_override": ["window-control-overlay", "minimal-ui"],
  "display": "fullscreen",
  "theme_color": "#000000",
  "background_color": "#ffffff",
  "gcm_sender_id": "654597310639"
}