课程通知和讨论区编辑、新建时宽度不对

app/views/messages/_form_course.html.erb

@@ -9,7 +9,7 @@
   <% else %>
       <%= f.text_field :subject, { size: 60, id: "message_subject", onkeyup: "regexSubject();",:class=>"talk_input w585" }.merge(extra_option) %>
   <% end %>
-  <span id="subject_span" class="ml55"></span>
+  <p id="subject_span" class="ml55"></p>
 </li>
 <li class="ml60 mb5">
   <% unless replying %>
@@ -30,7 +30,7 @@
   <%= text_area :quote,:quote,:style => 'display:none' %>
   <%= f.text_area :content, :class => 'talk_text fl', :id => 'message_content', :onkeyup => "regexContent();", :maxlength => 5000,:placeholder => "最多3000个汉字(或6000个英文字符)" %>
   <div class="cl"></div>
-  <span id="message_content_span"  class="ml55"></span>
+  <p id="message_content_span"  class="ml55"></p>
 </li>
 <div class="cl"></div>
 <li>

app/views/news/_course_form.html.erb

@@ -1,12 +1,12 @@
 <li  class="ml45">
     <label><span class="c_red">*</span>&nbsp;<%= l(:field_title) %>&nbsp;&nbsp;：</label>
     <input  type="text" name="news[title]" class="hwork_input" id="news_title" size="60" onkeyup="regexTitle();" maxlength="60" placeholder="60个字符以内" value="<%= is_new ? '' : @news.title %>">
-    <span id="title_notice_span" class="ml55"></span>
+    <p id="title_notice_span" class="ml55"></p>
   </li>
   <li class="ml45">
     <label class="fl" ><span class="c_red">*</span>&nbsp;<%= l(:field_description) %>&nbsp;&nbsp;：</label>
     <textarea id="news_description" name="news[description]" placeholder="最多3000个汉字(或6000个英文字符)"  class="hwork_text fl" onkeyup="regexDescription();" maxlength="6000"><%= is_new ? '' : @news.description %></textarea>
-    <span id="description_notice_span" class="ml55"></span>
+    <p id="description_notice_span" class="ml55"></p>
   </li>
   <div class="cl"></div>
   <li class="ml45">