body {
    min-width: 360px;
}

.wide-page {
    width: 100%;
    margin: auto;
    padding: 20px;
}

.narrow-page {
    width: 100%;
    max-width: 600px;
    margin: auto;
    padding: 20px;
}

/*iframe {
    display: none;
    width: 0;
    height: 0;
}
*/