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

h1 {
    color: #333;
}

.profile {
    margin: 20px;
}

.chatbox {
    padding: 10px;
    background-color: #f0f0f0;
}