body {
    font-family: Arial, sans-serif;
}

.container {
    width: 500px;
    margin: 0 auto;
}

#chatbox {
    border: 1px solid #ccc;
    height: 300px;
    overflow-y: scroll;
    padding: 10px;
}

input {
    width: 80%;
    padding: 10px;
}

button {
    padding: 10px;
}