.collapsible-radio-group .collapsible-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible-radio-group.expanded .collapsible-body {
    max-height: 1000px;
    /* large enough to show content */
}

.collapsible-radio-group .collapsible-body>.content {
    padding: 0.5rem 0 0 0;
}