From 54003fd404ee5575dc6c185acbd63b5fd4a005da Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 27 Oct 2026 15:04:53 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E9=A2=84=E8=A7=88=E9=87=8C=20normalize.?=
 =?UTF-8?q?css=20=E7=9B=96=E6=8E=89=E4=BA=86=E5=AD=A6=E7=94=9F=E8=87=AA?=
 =?UTF-8?q?=E5=B7=B1=E5=86=99=E7=9A=84=E6=A0=B7=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

normalize 放在学生的 <style> 后面，同样写法的规则后加载的赢，学生写的 body { margin: 20px }、
h1 { margin: 0 } 等都不生效（实测 body 边距始终是 0）。挪到学生样式前面。
挑战预览、批改、作品展、提示词链、下载的文件都走 buildPreviewDocument，一起修好。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 client/src/utils/previewDocument.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/client/src/utils/previewDocument.ts b/client/src/utils/previewDocument.ts
index 3c1072a..56ca81d 100644
--- a/client/src/utils/previewDocument.ts
+++ b/client/src/utils/previewDocument.ts
@@ -30,8 +30,9 @@ export function buildPreviewDocument({
     <title>预览</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     ${assetBaseUrl ? `<base href="${assetBaseUrl}">` : ""}
-    <style>${css}</style>
+    <!-- normalize 要在学生的样式前面，否则同样写法的规则（body、h1 的边距等）会被它盖掉 -->
     <link rel="stylesheet" href="/normalize.min.css" />
+    <style>${css}</style>
   </head>
   <body>
     ${html}