* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #333333;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

h1,
h2,
h3 {
  color: #f1f1f1;
  text-align: center;
}

h1 {
  font-size: 10rem;
}

h2 {
  font-size: 3rem;
}

h3 {
  font-size: 2rem;
}