Examine source code of Answers

{
  "name": "Answers",
  "description": "Shares the questions and answers. Helps to get answers",
  "version": "2.2",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "65.0",
      "id": "{2e0bc268-d814-4eb8-9b65-56a85003d16a}"
    }
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "https://*.epam.com/*",
    "*://answers.itpu.pro/*",
    "*://elearn.university.epam.com/*",
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_title": "Answers",
    "default_popup": "src/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.epam.com/*"
      ],
      "js": [
        "src/content_scripts/test_page.js"
      ],
      "css": [
        "src/style.css",
        "style.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ]
}