body { font-family: Arial; margin: 40px; }
  h2 { margin-bottom: 10px; }
  input { padding: 5px; }
  button { padding: 5px 10px; margin-left: 5px; }
  table { width: 100%; border-collapse: collapse; margin-top: 20px; }
  th, td { border: 1px solid #ccc; padding: 8px; text-align: left; }
  th { background: #eee; }