html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  background-color: #000;
  font-family: sans-serif;
}

h1 {
  font-size: 80px;
  margin: 20px 0;
}