New header and backgroud style

apps/frontend/src/routes/__root.tsx

@@ -1,3 +1,4 @@
+import { Layout } from '@/components/layout';
 import { NotFoundPage } from '@/features/not-found/not-found-page';
 import { ServerErrorPage } from '@/features/server-error/server-error-page';
 import type { ApiClient } from '@/lib/api-client';
@@ -10,7 +11,17 @@ type RouterContext = {
 };
 
 export const Route = createRootRouteWithContext<RouterContext>()({
-  component: Outlet,
+  component: RootRoute,
   errorComponent: ServerErrorPage,
   notFoundComponent: NotFoundPage,
 });
+
+function RootRoute() {
+  return (
+    <Layout>
+      <div className="flex flex-col p-6">
+        <Outlet />
+      </div>
+    </Layout>
+  )
+}