body {
  margin: 0;
  background: #f5f5f7;
  color: #111;
}

main {
  background: #fff;
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
}

button {
  border: 0;
  background: #111;
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
}