body {
  font-family: Arial;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
  margin-top: 50px;
}

.chat-container {
  width: 350px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px gray;
  padding: 15px;
}

h2 {
  text-align: center;
}

#chatbox {
  height: 300px;
  border: 1px solid #ccc;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  position: sticky;
  top: 0;
  background: #007bff;
  color: white;
  padding: 10px;
  text-align: center;
  font-weight: bold;
  z-index: 1;
}

#messages {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}

.user {
  text-align: right;
  color: blue;
  margin: 5px;
}

.bot {
  text-align: left;
  color: green;
  margin: 5px;
}

.input-area {
  display: flex;
  margin-top: 10px;
}

input {
  flex: 1;
  padding: 8px;
}

button {
  padding: 8px;
}