Examine source code of Disable Transitions

{
  "manifest_version": 2,
  "name": "Disable Transitions",
  "version": "1.0",
  "description": "Disable all CSS transitions and animations",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "disable-transitions.css"
      ]
    }
  ]
}