body {
  margin: 0;
  font-family: sans-serif;
  background: black;
  color: white;
  text-align: center;
}
img {
  max-width: 100%;
  margin: 1rem 0;
}
main {
  padding: 2rem;
}
button, a {
  padding: 0.75rem 1.5rem;
  margin: 0.5rem;
  border-radius: 999px;
  text-decoration: none;
}
a.buy {
  background: white;
  color: black;
  font-weight: bold;
}
button.copy {
  background: transparent;
  border: 1px solid white;
  color: white;
}