body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: #f7f9fc;
  color: #222;
}

h1, h2, h3 {
  margin: 0 0 1rem;
}

button {
  font-family: inherit;
  cursor: pointer;
}