body {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 0;
    background-color: #f4f4f4;
}

input[type="text"] {
    padding: 10px;
    width: 300px;
    margin-right: 10px;
}

button {
    padding: 10px 20px;
    cursor: pointer;
    background-color: #007BFF;
    color: white;
    border: none;
}

#messagesContainer {
    margin-top: 20px;
    padding: 10px;
    background-color: white;
    border-radius: 5px;
}