课程留言列表，拉长时显示不正确

app/views/courses/_courses_jours.html.erb

@@ -12,7 +12,7 @@
   div.recall_con .reply_btn{margin-left:555px;margin-top:5px;}
 </style>
 <%= javascript_include_tag "/assets/kindeditor/kindeditor" %>
-<div class="msg_box" id='leave-message' nhname="new_message">
+<div class="msg_box fl" id='leave-message' nhname="new_message">
   <%# reply_allow = JournalsForMessage.create_by_user? User.current %>
   <h4><%= l(:label_leave_message) %></h4>
 
@@ -30,15 +30,20 @@
                  :placeholder => "#{l(:label_welcome_my_respond)}",:maxlength => 250}%>
       <textarea cols="40" nhname="new_message_textarea" maxlength="250" name="new_form[course_message]" placeholder="请在此留下你的意见和建议！" rows="20" style="display: none;"></textarea>
       <p nhname="contentmsg"></p>
+    <% end %>
+      <div class="cl"></div>
+      <div>
         <div class="fl" style="padding-top:5px;" nhname="toolbar_container"></div>
         <a href="javascript:void(0)" class="grey_btn fr ml10 mt10" nhname="cancel_btn">取&nbsp;&nbsp;消</a>
         <a href="javascript:void(0)"  onclick='$("#leave_message_form").submit();' class="blue_btn fr mt10">
           <%= l(:button_leave_meassge)%>
         </a>
-    <% end %>
+      </div>
   <% end %>
 </div>
 
+<div class="cl"></div>
+
 <div id="history">
   <%= render :partial => 'history',:locals => { :contest => @contest, :journals => @jour, :state => false} %>
 </div>

public/stylesheets/courses.css

@@ -170,7 +170,7 @@ a:hover.work_edit{color: #fff; background: #64bdd9;}
 .wzan a{ display: block;}
 a.wzan_img{background:url(images/pic_zan.png) 0 -59px no-repeat; display:block; height:31px; width:30px; color:#fff;}
 a.wzan_visited{background:url(images/pic_zan.png) 0 0 no-repeat;}
-.msg_box{ width:670px; height:225px; border-bottom:1px dashed #CCC; padding-top:10px;}
+.msg_box{ width:670px;  border-bottom:1px dashed #CCC; padding-top:10px;}
 .msg_box h4{ }
 .msg_box textarea{width:658px;height:90px;padding:5px;overflow:hidden;background-color: #ffffff; border:1px solid #CCC; margin:5px 0px; color:#666;  font-size:12px; }