body {
  font-family: Arial, sans-serif;
  max-width: 700px;
  margin: 40px auto;
  padding: 20px;
}

textarea {
  width: 100%;
  height: 150px;
  margin-bottom: 20px;
  padding: 10px;
  font-size: 16px;
}

button {
  padding: 12px 20px;
  font-size: 16px;
  cursor: pointer;
}

#output {
  margin-top: 20px;
  padding: 15px;
  background: #f5f5f5;
  border-radius: 6px;
  white-space: pre-wrap;
}