body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #fafafa;
  color: #222;
  margin: 40px;
}
h1 {
  font-size: 2em;
}
a {
  color: #0055aa;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}