Youtube player centerer Firefox

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manifest.json
{
  "name": "Youtube player centerer",
  "version": "0.1.1",
  "description": "Centers the youtube player, so it's not offset to the left",
  "manifest_version": 2,
  "author": "Ville kokkarinen",
  "content_scripts": [
    {
      "css": [
        "styles.css"
      ],
      "js": [
        "PlayerCenterer.js",
        "jquery.js"
      ],
      "matches": [
        "https://www.youtube.com/*",
        "https://www.youtube.com/watch*"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Youtube-player-centerer"
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{896997f6-fc57-4a40-9d25-98104777ac6b}",
      "strict_min_version": "42.0"
    }
  }
}

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