Examine source code of No Blink for Google Docs

{
  "manifest_version": 3,
  "name": "No Blink for Google Docs",
  "version": "3.0",
  "description": "Disables the blinking cursor animation on Google Docs.",
  "browser_specific_settings": {
    "gecko": {
      "id": "no-blink-cursor-v2@google-docs-fix",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://docs.google.com/*"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_idle"
    }
  ]
}