A Chrome extension to stop you visiting certain websites

content.js

window.onload = () => {
  while (document.body.firstElementChild) {
    document.body.removeChild(document.body.firstElementChild)
  }

  document.body.style.textAlign = "center"
  document.body.style.lineHeight = "100vh"
  document.body.style.fontSize = "50vw"

  document.body.appendChild(document.createTextNode("NO!"))
}

manifest.json

{
  "description": "Block visiting certain sites",
  "manifest_version": 2,
  "name": "Block Website",
  "version": "0.4",
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "https://foxnews.com/*"
      ]
    }
  ]
}