[data-control="page-preview"] {
    margin: 0;
    padding: 0 1em 1em 1em;
    background: #f2f2f2;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
}
[data-control="page-preview"] iframe {
    background: #fff;
    margin: 0 auto;
    border: 0;
    box-shadow: 0px 0px 7px -3px rgb(0 0 0 / 50%);
    border-radius: 5px;
}
[data-control="page-preview"] .devices {
    margin: 0 auto;
    list-style: none;
    display: flex;
    justify-content: center;
    background: #f2f2f2;
    padding: 0.5em 1em;
}
[data-control="page-preview"] .devices a {
    padding: 0.5em 0.75em;
    display: block;
    margin-right: 1em;
    border-radius: 3px;
    background: #ddd;
    transition: all .2s ease;
}
[data-control="page-preview"] .devices a.active,
[data-control="page-preview"] .devices a:hover {
    font-weight: bold;
    background: #333;
    color: #fff;
}
[data-control="page-preview"].preview-desktop iframe {
    width: 100%;
}
[data-control="page-preview"].preview-tablet iframe {
    width: min(768px, 100%);
}
[data-control="page-preview"].preview-mobile iframe {
    width: min(320px, 100%);
}

div.form-group[data-field-name="_preview"],
div.form-group[data-field-name="_preview"] div[data-control="page-preview"],
div.form-group[data-field-name="_preview"] div[data-control="page-preview"] iframe {
    height: 100%;
}

div.form-group[data-field-name="_preview"] {
    padding-bottom: 0;
}