body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f5f5f5;
}
main {
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  padding-top: 4rem;
}
h1 {
  font-weight: lighter;
}
h1 > strong {
  font-weight: bold;
}
p {
  font-size: larger;
}
a:any-link {
  color: black;
}
@media (prefers-color-scheme: dark) {
  body {
    background: #1d1f20;
  }
  a:any-link, body {
    color: #f5f5f5;
  }
}