Examine source code of Cap

{
  "author": "sasa cocic-banjanac",
  "manifest_version": 2,
  "name": "Cap",
  "version": "1.1.22",
  "description": "A way to block websites that you don't want to visit, because they are destorying your life",
  "icons": {
    "16": "icons/hat-16.png",
    "48": "icons/hat-48.png",
    "128": "icons/hat-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "*://*/*",
    "tabs",
    "storage",
    "alarms",
    "idle"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "failsafe@failsafe.id"
    }
  },
  "background": {
    "page": "background.html"
  },
  "web_accessible_resources": [
    "bw.html",
    "fonts/Poppins/Poppins-Regular.ttf"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "block-website.js"
      ],
      "css": [
        "bw.css"
      ]
    }
  ]
}