diff --git a/customize.dist/src/less2/include/modals-ui-elements.less b/customize.dist/src/less2/include/modals-ui-elements.less
index e8d9695c5..ffb6f95c9 100644
--- a/customize.dist/src/less2/include/modals-ui-elements.less
+++ b/customize.dist/src/less2/include/modals-ui-elements.less
@@ -277,7 +277,8 @@
         max-width: 100%;
         max-height: 300px;
         overflow: auto;
-        // XXX these styles yield weird results for tall, thin images
+        margin-bottom: 15px;
+        // FIXME these styles yield weird results for tall, thin images
         // maybe img { object-fit: contain; } or scale-down are options
         // but they have problems too
         media-tag {