diff --git a/src/styles/lib/highlight.less b/src/styles/lib/highlight.less
index e3a72c3958..446a1e2e08 100644
--- a/src/styles/lib/highlight.less
+++ b/src/styles/lib/highlight.less
@@ -123,7 +123,10 @@ html {
 	}
 
 	code.hljs {
-		padding: 3px 5px
+		padding: 3px 5px;
+		&::-webkit-scrollbar {
+			height: 4px;
+		}
 	}
 
 	.hljs {