Examine source code of MV-Ignited

{
  "manifest_version": 3,
  "name": "MV-Ignited",
  "description": "Extensión de navegador para el foro de mediavida.com que enriquece la experiencia de usuario añadiendo y mejorando funcionalidades.",
  "version": "6.2.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4b01d379-9f71-4ade-9927-0acc6dd50d47}"
    }
  },
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/logo-16.png",
    "19": "icons/logo-19.png",
    "32": "icons/logo-32.png",
    "38": "icons/logo-38.png",
    "48": "icons/logo-48.png",
    "64": "icons/logo-64.png",
    "128": "icons/logo-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.mediavida.com/*"
      ],
      "css": [
        "styles/mediavida.css",
        "styles/vendor.css"
      ],
      "js": [
        "theme-loader.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "webNavigation",
    "scripting"
  ],
  "host_permissions": [
    "https://www.mediavida.com/*"
  ]
}