diff --git a/app/views/courses/index.html.erb b/app/views/courses/index.html.erb
index 43c0c72..ec0bafa 100644
--- a/app/views/courses/index.html.erb
+++ b/app/views/courses/index.html.erb
@@ -57,13 +57,11 @@
 
                       <td><%= form_for course, url: excel_in_course_path(course) , html: {class: 'form-horizontal', role: 'form'} do |f| %>
                             <div class="form-group">
-                              <div class="col-sm-3">
                                 <div class="input-group">
-                                  <%= f.file_field :excel ,class: 'btn btn-xs btn-info'%>
+                                  <%= f.file_field :excel %>
                                   <%= f.hidden_field :excel_cache %>
                                   <%= f.submit '提交', class: 'btn btn-success' %>
                                 </div>
-                              </div>
                             </div>
 
                         <% end %></td>