Examine source code of Teams Auto Expand

{
  "manifest_version": 2,
  "name": "Teams Auto Expand",
  "version": "0.0.1",
  "description": "Automatically expands posts on Microsoft Teams, replacing the 'See more...' link with the full content of conversations for a seamless reading experience",
  "content_scripts": [
    {
      "matches": [
        "https://teams.microsoft.com/*"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ed89d77c-7e6f-4b58-b268-bdfac483457b}"
    }
  }
}