.acf-editor-wrap .mce-edit-area iframe {
  min-height: 200px;
  max-height: none;
}

.acf-block-preview .collapsible {
  border: 1px solid #999;
  border-radius: 4px;
}

.acf-block-preview .collapsible-title {
  border-bottom: 1px solid #999;
  margin: 0;
  padding: 1rem;
}

.acf-block-preview .collapsible-content {
  padding: 1rem;
}