Examine source code of Youtube - Hide Short

{
  "manifest_version": 2,
  "name": "Youtube - Hide Short",
  "version": "1.1",
  "description": "Youtube's Short as others infinite scrollable content are designed to trap your attention span. \n And let's be honest they've nailed it, it is working very well. \n So well, that in order to get less distracted in my personnal life I've decided to create this extension. How is it working ? It just add CSS code to hide shorts' HTML elements, they are still here but are hidden. \n This extension is free, has no data collecting process. \n Update will be done if change are made in the extension doesn't work anymore.",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3d2007bb-1b91-4ddf-8dac-71e52eb5e4a0}"
    }
  }
}