diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 4af5742a9..949fb7f83 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -5,7 +5,7 @@
 
 <div class="HomeWorkCon">
   <div>
-    <input  type="text" name="homework_common[name]" id="homework_name" class="InputBox  w712" maxlength="255" onfocus="$('#homework_editor').show()" onkeyup="regex_homework_name();" placeholder="请输入作业标题" value="<%= homework.name%>" >
+    <input  type="text" name="homework_common[name]" id="homework_name" class="InputBox  w701" maxlength="255" onfocus="$('#homework_editor').show()" onkeyup="regex_homework_name();" placeholder="请输入作业标题" value="<%= homework.name%>" >
     <p id="homework_name_span" class="c_red mt5"></p>
   </div>
   <div class="cl"></div>
@@ -34,7 +34,7 @@
 
 
     <div class="mt10">
-      <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox  w720",:value => "请选择发布作业的课程"} %>
+      <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox w709",:value => "请选择发布作业的课程"} %>
     </div>
     <p id="homework_course_id_span" class="c_red mt5"></p>
     <div class="cl"></div>
diff --git a/public/stylesheets/new_user.css b/public/stylesheets/new_user.css
index b6e1919f2..a37123d76 100644
--- a/public/stylesheets/new_user.css
+++ b/public/stylesheets/new_user.css
@@ -856,6 +856,8 @@ a:hover.BlueCirBtn{ background:#269ac9; color:#fff;}
 .w708{width: 708px;}
 .w712{width:712px;max-width:712px;min-width: 712px;}
 .w720{width:721px;}
+.w709{width: 709px;}
+.w701{width: 701px;}
 a.AnnexBtn{  background: url(../images/homepage_icon2.png) 0px -343px no-repeat; width:70px; height:20px; display:block; padding-left:20px; color:#888888;}
 a:hover.AnnexBtn{background: url(../images/homepage_icon2.png) -90px -343px no-repeat; color:#269ac9;}
 a.FilesBtn{  background: url(../images/homepage_icon2.png) 0px -373px no-repeat; width:70px; height:20px; display:block; padding-left:20px; color:#888888;}