Examine source code of GitHub Center

{
  "manifest_version": 3,
  "name": "GitHub Center",
  "author": "Katsute",
  "description": "Center navigation on large viewports",
  "version": "6.2",
  "homepage_url": "https://github.com/KatsuteDev/GitHub-Center",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "minimum_chrome_version": "105",
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9021942-d0f6-40a5-82f3-904fd8767174}",
      "strict_min_version": "121.0"
    }
  },
  "permissions": [],
  "content_scripts": [
    {
      "css": [
        "style.css"
      ],
      "matches": [
        "https://github.com/*"
      ]
    },
    {
      "css": [
        "gist.css"
      ],
      "matches": [
        "https://gist.github.com/*"
      ]
    }
  ]
}