html {
  font-size: 10px;
  font-family: sans-serif;
}
body {
  width: 80%;
  margin-right: auto;
  margin-left: auto;
}

h1, h2, h3 {
  text-align: center;
}
h1 {
  font-size: 5rem;
  text-transform: uppercase;
  text-shadow: 4px 4px 20px black;
}
h2 {
  font-size: 4rem;
}
h3 {
  font-size: 3rem;
}
p {
  font-size: 1rem;
  line-height: 2;
  white-space: pre-wrap;
}