Examine source code of Focus for Instagram

{
  "manifest_version": 2,
  "name": "Instagram Explore & Reels Blocker",
  "version": "1.0",
  "description": "Hide Instagram Explore and Reels pages and icons.",
  "permissions": [
    "*://www.instagram.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.instagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0f55b93-0367-43db-b930-f5ec8d476e26}"
    }
  }
}