diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 99036ddccf..5e960f7753 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -870,7 +870,7 @@ padding: 15px 0 15px 0;
 
 #content .mypage-box table th {
   border:none;
-  background: white;
+  background: transparent;
   font-weight: bold;
 }