解决冲突丢失问题

app/views/files/_attachement_list.html.erb

@@ -22,7 +22,7 @@
 </span>
 </div>
 
-<button name="button" class="sub_btn" onclick="_file.click()" onmouseover="this.focus()" type="button"><%= l(:label_browse)%></button>
+<button name="button" class="f_l ml10" onclick="_file.click()" onmouseover="this.focus()" type="button"><%= l(:label_browse)%></button>
 <%= file_field_tag 'attachments[dummy][file]',
                    :id => '_file',
                    :class => 'file_selector',