Examine source code of LinkedIn Normalize Scroll

{
  "manifest_version": 3,
  "name": "LinkedIn Normalize Scroll",
  "version": "1.0",
  "description": "Automatically set font-size for main element on LinkedIn",
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-normalize-scroll@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}