Examine source code of No distractions

{
  "manifest_version": 3,
  "name": "No distractions",
  "description": "A tool that hides distractions on websites",
  "version": "1.0",
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "*://news.ycombinator.com/*",
        "*://*.youtube.com/*",
        "*://*.x.com/*",
        "*://*.reddit.com/*"
      ],
      "css": [
        "hide.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{05a3bdfe-b4a2-484e-861a-546fc1974658}"
    }
  }
}