body { 
  padding: 20px;
  font-family: sans-serif;
}
table {
  border-collapse: collapse;
  margin: 20px 0;
}
th, td {
  padding: 10px;
  border: 1px solid #ddd;
}
th {
  background: #f5f5f5;
}
pre {
  background: #f8f8f8;
  padding: 10px;
  border-radius: 4px;
}
textarea {
  margin: 10px 0;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ddd;
}
input[type="button"] {
  padding: 8px 16px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
input[type="button"]:hover {
  background: #0056b3;
}