body {
  background: black;
  color: white;
  font-family: monospace;
  text-align: center;
  margin: 0;
}
.hero {
  padding: 5em;
}
button {
  margin-top: 2em;
  padding: 1em 2em;
  font-size: 1.2em;
  background: red;
  color: white;
  border: none;
  cursor: pointer;
}