application/config.php

@@ -283,7 +283,7 @@ return [
         //是否默认展示子菜单
         'show_submenu'          => false,
         //后台皮肤,为空时表示使用skin-black-blue
-        'adminskin'             => '',
+        'adminskin'             => 'skin-blue-light',
         //后台是否启用面包屑
         'breadcrumb'            => false,
         //是否允许未知来源的插件压缩包