diff --git a/core/themes/stable/css/ckeditor/plugins/drupalimage/ckeditor.drag-and-drop-uploads.css b/core/themes/stable/css/ckeditor/plugins/drupalimage/ckeditor.drag-and-drop-uploads.css
new file mode 100644
index 0000000..cc29f91
--- /dev/null
+++ b/core/themes/stable/css/ckeditor/plugins/drupalimage/ckeditor.drag-and-drop-uploads.css
@@ -0,0 +1,6 @@
+/**
+ * Needed in CKEditor, to enhance the UX of the drag-and-drop image uploading.
+ */
+img[data-cke-drupalimage-preview] {
+  opacity: 0.3;
+}