diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index 2f1c8e591..f1928f6da 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -614,7 +614,8 @@ a.wzan_visited{background:url(../images/new_project/public_icon.png) 0px -503px
 .newwork_btn a{background:#64bdd9;color:#fff;font-size:14px; font-weight:normal; padding:2px 10px; display:block; text-align:center; float:right;}
 .newwork_btn a:hover{ background:#329cbd;}
 .files_tag{ width:670px; min-height:22px;margin-bottom:10px;}/* overflow:hidden; */
-a.files_tag_icon{ background:#e2f3f9; color:#54aeca; border:1px solid #bbe2ef; padding:1px 10px; float:left; margin-right:10px;margin-bottom:10px; }
+/*padding:1px 10px 修改原因，padding会导致内部输入框和外边框有边距*/
+a.files_tag_icon{ background:#e2f3f9; color:#54aeca; border:1px solid #bbe2ef; padding:1px 1px; float:left; margin-right:10px;margin-bottom:10px; }
 a.files_tag_select{ background:#64bdd9; color:#fff; border:1px solid #bbe2ef; padding:1px 10px; float:left; margin-right:10px;margin-bottom:10px;}
 
 /* 20150423作业评分*/