diff --git a/javascript/gallery.js b/javascript/gallery.js
index 7a561ec4c..ccf370ebc 100644
--- a/javascript/gallery.js
+++ b/javascript/gallery.js
@@ -161,6 +161,7 @@ class GalleryFolder extends HTMLElement {
   constructor(name) {
     super();
     this.name = decodeURI(name);
+    this.style.overflowX = 'hidden';
     this.shadow = this.attachShadow({ mode: 'open' });
     this.shadow.adoptedStyleSheets = [folderStylesheet];
   }