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

h1 {
    color: #333;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    cursor: pointer;
    margin-bottom: 20px;
}

button:hover {
    background-color: #45a049;
}

#responseContainer {
    margin-top: 20px;
}

.message {
    background-color: #f1f1f1;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.message .user {
    font-weight: bold;
    color: #333;
}

.message .dateTime {
    color: #777;
    font-size: 0.9em;
}

.message .text {
    margin-top: 5px;
}