body {
  margin: 0;
  min-height: 100vh;
  background: #101010;
  color: #efefef;
  font-family: "Fira Sans";
}

main {
  max-width: 720px;
  padding: 16px;
  margin: 0 auto;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 22px;
}

p {
  font-size: 18px;
}

code {
  font-family: "Fira Code";
}

a {
  color: #559fff;
}