html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, "Hiragino Sans", "Yu Gothic", sans-serif;
  background: #fafafa;
  color: #222;
  line-height: 1.7;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

h1 {
  font-weight: 400;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  margin: 0 0 2rem 0;
}

a {
  color: #222;
  text-decoration: none;
  border-bottom: 1px solid #ccc;
}

a:hover {
  border-bottom-color: #222;
}