add @stack('styles')

api-v8/resources/views/library/layouts/app.blade.php

@@ -6,6 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
     <meta http-equiv="X-UA-Compatible" content="ie=edge" />
     <title>@yield('title', '巴利书库')</title>
+    @stack('styles')
     <link href="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/css/tabler.min.css" rel="stylesheet" />
     <link href="https://cdn.jsdelivr.net/npm/@tabler/icons@latest/icons-sprite.svg" rel="stylesheet" />
     <style>