body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.chat-container {
  width: 400px;
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0px 4px 10px rgba(0,0,0,0.1);
}

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

#user-input {
  width: 70%;
  padding: 8px;
}

button {
  padding: 8px 12px;
  cursor: pointer;
}