Examine source code of Midokuni Fixer

{
  "manifest_version": 2,
  "name": "Midokuni Fixer",
  "version": "1.0",
  "description": "Fixes Midokuni site so the 'What to do without' badge doesnt overlap the text",
  "icons": {
    "48": "icons/brick.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://hina.loves.midokuni.com/*"
      ],
      "css": [
        "fixer.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{111c6337-2b30-475b-88d6-199592099cf4}"
    }
  }
}