*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: sans-serif;
  font-size: 1.125rem;
}

body {
  margin: 0;
  background: #111;
  color: #fff;
}

main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

main p {
  margin: 0.25rem 0;
}

a {
  color: inherit;
  text-decoration: none;
}

@media (max-width: 600px) {
  main {
    padding: 1rem;
    text-align: center;
  }
}