diff --git a/scaladoc/resources/dotty_res/styles/theme/layout/container.css b/scaladoc/resources/dotty_res/styles/theme/layout/container.css
index d71c75e8bda0..849235e2fa82 100644
--- a/scaladoc/resources/dotty_res/styles/theme/layout/container.css
+++ b/scaladoc/resources/dotty_res/styles/theme/layout/container.css
@@ -19,7 +19,18 @@ p {
   --header-height: calc(8 * var(--base-spacing));
 }
 
+/* Scrollbar */
+
 ::-webkit-scrollbar {
   width: 0;
   background: transparent;
 }
+
+#leftColumn ::-webkit-scrollbar{
+  width: 5px;
+}
+
+#leftColumn ::-webkit-scrollbar-thumb {
+  background: var(--code-syntax-highlighting-scrollbar);
+  border-radius: 2px;
+}
\ No newline at end of file