body {
  max-width: 40em;
  margin: 0 auto;
  padding: 5px;
  font-family: Georgia, serif;
  font-size: 18px;
  line-height: 1.6em;
  color: black;
}
h1, h2, h3 {
  font-family: sans-serif;
  font-weight: normal;
}
.nav-links {
  display: flex;
  gap: 20px;
}
.nav-links a {
  text-decoration: none;
  padding: 10px 20px;
  background-color: #333;
  color: white;
  border-radius: 5px;
  transition: background-color 0.3s;
}

.nav-links a:hover {
  background-color: #555;
}

/* Can I add a mobile breakpoint here?  */