diff --git a/board/templates/admin/board/reportrecord/change_list.html b/board/templates/admin/board/reportrecord/change_list.html
index a27d185..88e37f0 100644
--- a/board/templates/admin/board/reportrecord/change_list.html
+++ b/board/templates/admin/board/reportrecord/change_list.html
@@ -3,10 +3,6 @@
 {% block extrastyle %}
 {{ block.super }}
 <style>
-.winbox {
-    background: var(--border-color);
-}
-
 .field-post_body {
     width: 100%;
 }