body {
  font-family: Arial, sans-serif;
  padding: 20px;
  max-width: 700px;
  margin: auto;
  background: #f5f5f5;
}

h1 {
  text-align: center;
}

#scenario {
  background: white;
  padding: 15px;
  margin: 20px 0;
  border-radius: 8px;
  font-size: 18px;
}

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

button {
  margin-top: 10px;
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
}

#result {
  margin-top: 20px;
  font-weight: bold;
  white-space: pre-wrap;
}