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

h1 {
    color: #333;
}

.controls {
    margin: 15px 0;
}

label {
    margin: 0 10px;
    font-weight: bold;
}

select, button {
    padding: 10px;
    font-size: 1em;
    margin: 5px;
    border-radius: 5px;
}

button {
    background-color: #0056b3;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #003f75;
}

iframe.responsive-iframe {
    width: 90vw;
    max-width: 1600px;
    height: 90vh; /* Fill most of the screen height */
    border: none;
    margin-top: 20px;
}