body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    text-align: center;
}

h1 {
    color: #333;
}

.page-selector {
    margin: 20px;
}

button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    margin: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.iframe-container {
    margin: 20px;
}

iframe {
    width: 100%;
    height: 500px;
    border: none;
}