diff --git a/src/app/(app)/playground/@description/layout.tsx b/src/app/(app)/playground/@description/layout.tsx
index d5f836b..9e9ec02 100644
--- a/src/app/(app)/playground/@description/layout.tsx
+++ b/src/app/(app)/playground/@description/layout.tsx
@@ -25,7 +25,7 @@ export default function DescriptionLayout({ children }: DescriptionLayoutProps)
         </TabsList>
         <ScrollBar orientation="horizontal" />
       </ScrollArea>
-      <TabsContent value="description" className="mt-0 border-t">
+      <TabsContent value="description" className="mt-0 border-t border-muted">
         {children}
       </TabsContent>
     </Tabs>
diff --git a/src/app/(app)/playground/@workspace/layout.tsx b/src/app/(app)/playground/@workspace/layout.tsx
index 9fc5d0f..7c2e477 100644
--- a/src/app/(app)/playground/@workspace/layout.tsx
+++ b/src/app/(app)/playground/@workspace/layout.tsx
@@ -25,7 +25,7 @@ export default function WorkspaceLayout({ children }: WorkspaceLayoutProps) {
         </TabsList>
         <ScrollBar orientation="horizontal" />
       </ScrollArea>
-      <TabsContent value="code" className="mt-0 border-t">
+      <TabsContent value="code" className="mt-0 border-t border-muted">
         {children}
       </TabsContent>
     </Tabs>