Examine source code of Codeforces Problem Tags Hider

{
  "manifest_version": 3,
  "name": "Codeforces Problem Tags Hider",
  "version": "1.0.0",
  "description": "Hides the problem tags on Codeforces problem pages.",
  "browser_specific_settings": {
    "gecko": {
      "id": "codeforces-problem-tags-hider@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://codeforces.com/problemset/problem/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}