diff --git a/_content/tour/static/css/app.css b/_content/tour/static/css/app.css
index c8cd9db7ed..cb67d0de06 100755
--- a/_content/tour/static/css/app.css
+++ b/_content/tour/static/css/app.css
@@ -14,6 +14,7 @@ html, body {
 }
 [data-theme='dark'] body {
     background-color: #2B2D2F;
+    scrollbar-color:#2B2D2F #1d1d1d;
 }
 * {
     outline: none;