body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 2rem;
  background-color: #f9f9f9;
  color: #333;
}

main {
  max-width: 800px;
  margin: auto;
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

#markdown-output {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  background-color: #fff;
}