body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.chat-container {
  width: 100%;
  max-width: 600px;
  background: #fff;
  padding: 20px;
  box-shadow: 0 0 10px #ccc;
  border-radius: 10px;
}

#chat-box {
  height: 300px;
  overflow-y: auto;
  border: 1px solid #ccc;
  padding: 10px;
  margin-bottom: 10px;
  white-space: pre-wrap;
}

textarea {
  width: 100%;
  height: 60px;
  resize: none;
}

button {
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  cursor: pointer;
}