fix content issue

nginx.conf

@@ -11,8 +11,9 @@ http {
         location / {
             root   /usr/share/nginx/html;
             index  index.html index.htm;
-            # This line forces Nginx to pass routing back to React Router
-            try_files $uri $uri/ /index.html;
+            # Next.js static export creates page.html (e.g. contact.html) for routes.
+            # We check $uri.html to allow clean URLs without the .html extension.
+            try_files $uri $uri.html $uri/ /404.html;
         }
     }
 }