Examine source code of you style

{
  "manifest_version": 2,
  "name": "you style",
  "version": "1.3.17",
  "description": "Reorganize the layout of YouTube",
  "icons": {
    "48": "images/youtubeStyle48.png"
  },
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "youstyle@example.com",
      "strict_min_version": "80.0"
    }
  },
  "permissions": [
    "https://*.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "chrome.min.js"
      ],
      "css": [
        "youtubestyle.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_icon": {
      "48": "images/youtubeStyle48.png"
    },
    "default_title": "you style",
    "default_popup": "menu.html"
  }
}