body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}
h1 {
    color: #333;
}
#chat-container {
    width: 100%;
    max-width: 600px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}
#realtime-data {
    max-height: 400px;
    overflow-y: auto;
    padding: 20px;
}
.message {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 5px;
    background-color: #f1f1f1;
}
.message:nth-child(odd) {
    background-color: #e0e0e0;
}
.input-container {
    display: flex;
    padding: 10px;
    border-top: 1px solid #ddd;
    background-color: #fff;
}
#messageInput {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-right: 10px;
}
button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
}
button:hover {
    background-color: #0056b3;
}
#message-container {
    padding: 20px;
    color: red;
    font-size: 18px;
}