调整course.css

public/stylesheets/courses.css

@@ -510,7 +510,7 @@ a.wzan_visited{background:url(../images/new_project/public_icon.png) 0px -503px
 .newwork_btn a:hover{ background:#329cbd;}
 .files_tag{ width:670px; height:22px; overflow:hidden; margin-bottom:10px;}
 a.files_tag_icon{ background:#e2f3f9; color:#54aeca; border:1px solid #bbe2ef; padding:1px 10px; 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;}
+a.files_tag_select{ background:#64bdd9; color:#fff;  padding:1px 10px; float:left; margin-right:10px;margin-bottom:10px;}