body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #ffffff;
  color: #111;
  line-height: 1.6;
}

header {
  border-bottom: 1px solid #e5e5e5;
  padding: 40px 20px;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

h1, h2 {
  font-weight: 600;
}

section {
  margin-bottom: 40px;
}

ul {
  padding-left: 20px;
}

footer {
  border-top: 1px solid #e5e5e5;
  padding: 20px;
  text-align: center;
  font-size: 14px;
}

footer a {
  color: #111;
  text-decoration: none;
  margin: 0 5px;
}

footer a:hover {
  text-decoration: underline;
}