ohmu/third/drupal/bussikeskus/php83-test/html/sites/all/modules/iframe/iframe.css

div.field-type-iframe {
    margin: 0 auto;
    color: black;
    background-color: white;
}

@media only screen and (max-width: 480px) {
div.field-type-iframe {
    width: 100%;
    height: auto;
}
}