Add style.css for Past generation Preview

Add classes to make the preview gallery correctly display

style.css

@@ -0,0 +1,4 @@
+#gallery .thumbnails {flex-direction: column !important;display: inline-flex !important;flex-wrap: wrap !important; position: relative !important;}
+#gallery caption.caption {flex-direction: row !important;display: inline-flex !important;flex-wrap: wrap;white-space: unset !important;}
+#gallery .image-button img.with-caption {object-fit: cover !important;object-position: center !important;}
+#gallery button.preview {position: relative !important;}