diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index 1706098aa..457d6da75 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -502,9 +502,6 @@ blockquote {
 }
 a.member_search_edit {width: 43px;background: #15bccf;color: #fff;text-align: center;text-decoration: none;padding: 2px;}
 .min_search_edit {width: 150px;height: 20px;border: 1px solid #d0d0d0 !important;color: #666;}
-
-a.link_file{ background:url(../images/pic_file.png) 0 2px no-repeat; padding-left:20px; color:#64bdd9; }
-a:hover.link_file{ background:url(../images/pic_file.png) 0 -25px no-repeat; color:#3ca5c6;}
 .r_txt_tit{max-width:450px; overflow:hidden; white-space: nowrap; text-overflow:ellipsis;color:#15bccf; float:left; color:#09658c; font-size:14px;}
 
 /*日历选择图*/