:root {
  font:
    17px/1.5 system-ui,
    sans-serif;
  color: #142332;
  background: #f5f7fa;
}
main {
  max-width: 70rem;
  margin: 2rem auto;
  padding: 1rem;
}
button {
  font: inherit;
  padding: 0.65rem 1rem;
  margin: 0.25rem;
  cursor: pointer;
}
button:focus-visible {
  outline: 3px solid #075fb0;
  outline-offset: 3px;
}
pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: white;
  border: 1px solid #9cabb8;
  padding: 1rem;
}