html {
  font-family: system-ui, sans-serif;
  background: #f4f4f4;
  color: #191919;
}
body {
  margin: 0;
}
main {
  max-width: 720px;
  margin: 12vh auto;
  padding: 32px;
}
h1 {
  font-size: 42px;
}
p {
  line-height: 1.6;
}
a {
  margin-right: 18px;
  color: inherit;
}