html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Courier New', Courier, monospace;
  background-color: #16191F;
  color: #fff;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 3rem;
}

h1 {
  font-size: 5rem;
  margin: 0;
}