:root {
  font-family: system-ui, sans-serif;
  line-height: 1.6;
}
body {
  margin: 0;
  padding: 2rem;
}
main {
  max-width: 720px;
  margin: 8vh auto;
}
nav {
  display: flex;
  gap: 1.25rem;
  margin-top: 2rem;
}
a {
  color: inherit;
}