body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  padding: 20px;
}

.chat-container {
  max-width: 600px;
  margin: 0 auto;
  background: #ffffff;
  padding: 20px;
  border-radius: 10px;
}

#chat-box {
  height: 300px;
  overflow-y: auto;
  border: 1px solid #ddd;
  padding: 10px;
  margin-bottom: 10px;
  background: #fafafa;
}

#user-input {
  width: 100%;
  height: 60px;
  margin-bottom: 10px;
}