:root {
  font-family: system-ui, sans-serif;
  color: #18222c;
  background: #f4f6f8;
}
body {
  margin: 0;
}
main {
  max-width: 72rem;
  margin: auto;
  padding: 2rem;
}
p,
li {
  line-height: 1.6;
}
button {
  font: inherit;
  padding: 0.75rem 1rem;
  margin: 0.25rem;
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
}
button:focus-visible {
  outline: 3px solid #005fcc;
  outline-offset: 3px;
}
pre {
  padding: 1rem;
  background: white;
  border: 1px solid #b8c3cd;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}