body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

input, button {
    padding: 10px;
    margin: 5px;
    width: 80%;
}

#chat-messages {
    border: 1px solid #ccc;
    height: 300px;
    overflow-y: scroll;
    margin-bottom: 10px;
    text-align: left;
    padding: 10px;
}