diff --git a/app/views/avatar/_new_avatar_form.html.erb b/app/views/avatar/_new_avatar_form.html.erb
index 415ec09af..9c8a63941 100644
--- a/app/views/avatar/_new_avatar_form.html.erb
+++ b/app/views/avatar/_new_avatar_form.html.erb
@@ -1,10 +1,10 @@
 <a href="javascript:void(0)" class="upimg fl">
   <%= image_tag(url_to_avatar(source), id: "avatar_image", :width =>"60", :height =>"60",:alt=>"上传图片")%>
 </a>
-<%= link_to l(:button_delete_file),{:controller => :avatar,:action => :delete_image,:remote=>true,:source_type=> source.class,:source_id=>source.id},:confirm => l(:text_are_you_sure), :method => :post, :class => "upbtn fl" %>
+<%#= link_to l(:button_delete_file),{:controller => :avatar,:action => :delete_image,:remote=>true,:source_type=> source.class,:source_id=>source.id},:confirm => l(:text_are_you_sure), :method => :post, :class => "upbtn fl" %>
 <%= file_field_tag 'avatar[image]',
                    :id => nil,
-                   :class => 'upbtn fl',
+                   :class => 'upbtn',
                    :size => "1",
                    :multiple => false,
                    :onchange => 'addInputAvatar(this);',
diff --git a/public/images/avatars/Course/0 b/public/images/avatars/Course/0
index 585b4bfc0..8eb3d27d5 100644
Binary files a/public/images/avatars/Course/0 and b/public/images/avatars/Course/0 differ
diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index 805abee97..52cea851d 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -324,8 +324,8 @@ a:hover.st_add{ color:#ff8e15;}
 .courses_text{ border:1px solid #64bdd9; height:100px;width:532px; background:#fff; margin-left:5px; padding:5px; margin-bottom:10px;}
 .upimg{ border:1px solid  #eaeaea; display:block; width:60px; height:60px; padding:1px;}
 .upimg:hover{ border:1px solid #64bdd9; }
-.upbtn{ margin:40px 0 0 15px; display:block; padding:2px 5px; border:1px solid #eaeaea;}
-.upbtn:hover{border:1px solid #64bdd9; color:#64bdd9;}
+.upbtn{ margin:42px 0 0 10px; border: none;}
+/*.upbtn:hover{border:1px solid #64bdd9; color:#64bdd9;}*/
 /* 功能倒计时*/
 .w_img{ float:left; margin:10px 10px 15px 0px;}
 .w_p{ float:left; color:#15bccf; font-size:16px; font-weight:bold; margin-top:70px; }