diff --git a/fs_folder/static/src/preview_iframe/preview_iframe.scss b/fs_folder/static/src/preview_iframe/preview_iframe.scss
index 95e41a0d6d..aa49dd4bd3 100644
--- a/fs_folder/static/src/preview_iframe/preview_iframe.scss
+++ b/fs_folder/static/src/preview_iframe/preview_iframe.scss
@@ -8,7 +8,7 @@
     display: flex;
     justify-content: center;
     align-items: center;
-    z-index: 1000;
+    z-index: 9999;
 
     .iframe-container {
         position: relative;