.apb-preview {
  border: 1px dashed #ccc;
  padding: 24px;
  background: #f9f9f9;
  margin-bottom: 16px;
}
.apb-layout-grid {
  /* Grid layout styles */
}
.apb-layout-masonry {
  /* Masonry layout styles */
}
.apb-layout-slider {
  /* Slider layout styles */
}
.apb-layout-ticker {
  /* Ticker layout styles */
}