diff --git a/app/views/users/_user_homework_detail.html.erb b/app/views/users/_user_homework_detail.html.erb
index b962d5ab8..2c632b0df 100644
--- a/app/views/users/_user_homework_detail.html.erb
+++ b/app/views/users/_user_homework_detail.html.erb
@@ -357,7 +357,7 @@
                           <% end %>
                         </div>
                     <% end %>
-                    <div class="homepagePostReplyContent break_word list_style upload_img table_maxWidth" id="reply_content_<%= comment.id %>">
+                    <div class="homepagePostReplyContent break_word list_style upload_img table_maxWidth t_txt" id="reply_content_<%= comment.id %>">
                       <%= comment.notes.html_safe %></div>
                     <div class="orig_reply mb10 mt-10">
                       <div class="reply">