diff --git a/src/webui/www/private/css/style.css b/src/webui/www/private/css/style.css
index 18904a3d8..d5c627dbd 100644
--- a/src/webui/www/private/css/style.css
+++ b/src/webui/www/private/css/style.css
@@ -75,6 +75,18 @@ ol {
     list-style: none;
 }
 
+/* Scrollbars */
+
+@supports (scrollbar-width: auto) and (selector(::-webkit-scrollbar)) {
+    :root[slick-uniqueid], /* targets iframe mocha dialogs */
+    .dynamicTableDiv,
+    .mochaContentWrapper,
+    .panel,
+    #rssDetailsView {
+        scrollbar-width: thin;
+    }
+}
+
 /* Forms */
 
 input[type="text"],