Examine source code of Style Injector Pro

{
  "manifest_version": 3,
  "name": "Style Injector Pro",
  "version": "1.0",
  "description": "Style Injector Pro gives users the power to customize the appearance of any website by injecting custom CSS rules. Users can save different style sheets for different sites, apply them globally, and even share their creations, personalizing their web experience.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "style_injector_pro.png"
  },
  "icons": {
    "128": "style_injector_pro.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ojanelealieow267@hotmail.com"
    }
  }
}