diff --git a/app/views/layouts/base_courses.html.erb b/app/views/layouts/base_courses.html.erb
index 2a44f2980..59ed3ad39 100644
--- a/app/views/layouts/base_courses.html.erb
+++ b/app/views/layouts/base_courses.html.erb
@@ -143,18 +143,19 @@
       <% unless contributor_course_scor(@course.id).count == 0 %>
         <ul class="rankList">
         <h4>课程活跃度
-          <a class="contributor_course" onmouseover ="message_titile_show2($(this),event)" onmouseout ="message_titile_hide2($(this))">积分规则</a>
+          <a class="contributor_course" onmouseover ="message_titile_show2($(this),event)" onmouseout ="message_titile_hide2($(this))" style="cursor: pointer; position:relative;">积分规则</a>
         </h4>
-          <div  style="display: none;padding: 5px;" class="numIntro color_888">
-            <div class="contributor_course_innor">积分规则</div>
-            资源发布：资源数 x 5 </br>
-            问答发布：发帖数 x 2 </br>
-            通知发布：通知数 x 1 </br>
-            问答回复：回复数 x 1 </br>
-            作业留言：留言数 x 1 </br>
-            通知留言：留言数 x 1 </br>
-            课程留言：留言数 x 1  </br>
-            总得分为以上得分之和
+          <div  class="numIntro undis" style="cursor:pointer;">
+            <div class="active-degree-rule">
+            积分规则<br/>
+            资源发布：资源数 x 5 <br/>
+            问答发布：发帖数 x 2 <br/>
+            通知发布：通知数 x 1 <br/>
+            问答回复：回复数 x 1 <br/>
+            作业留言：留言数 x 1 <br/>
+            通知留言：留言数 x 1 <br/>
+            课程留言：留言数 x 1  <br/>
+            总得分为以上得分之和</div>
          </div>
 
         <% contributor_course_scor(@course.id).each do |contributor_score| %>
@@ -168,8 +169,8 @@
               <p><span class="c_green" style="cursor:pointer">
                 <a onmouseover ="message_titile_show($(this),event)" onmouseout ="message_titile_hide($(this))" class="c_green">
                   <%=total_score %></a></span></p>
-              <div  style="display: none" class="numIntro color_888">
-                <div class="contributor_course_calculate">积分计算</div>
+              <div  style="display: none" class="numIntro">
+                <div class="contributor-course-calculate">积分计算</div>
                 <%# unless  contributor_score.resource_num.to_i == 0 %>
                 <div style="padding-left: 2px;padding-bottom: 2px;padding-right: 2px">
                   资源发布数 x 5 = <%= contributor_score.resource_num.to_i %> x 5 = <%= contributor_score.resource_num.to_i * 5 %></br>
@@ -208,10 +209,11 @@
       <% unless hero_homework_scores.map(&:score).detect{|s| s.to_i != 0}.nil? %>
         <ul class="rankList">
           <h4><span>课程英雄榜</span>
-            <a class="contributor_course" onmouseover ="message_titile_show2($(this),event)" onmouseout ="message_titile_hide2($(this))">积分规则</a></h4>
-          <div  style="display: none" class="numIntro color_888">
-            <div class="hero_course_innor">积分规则</div>
+            <a class="contributor_course" onmouseover ="message_titile_show2($(this),event)" onmouseout ="message_titile_hide2($(this))" style="cursor:pointer;">积分规则</a></h4>
+          <div  style="cursor:pointer;" class="numIntro undis">
+            <div class="hero-degree-rule">积分规则<br/>
             英雄榜的得分是每个同学作业的得分总和
+            </div>
           </div>
           <% hero_homework_scores.each do |student_score| %>
               <% if student_score.score.to_i != 0 %>
diff --git a/db/schema.rb b/db/schema.rb
index 76dd8e19c..a7ffc23b1 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -1387,7 +1387,6 @@ ActiveRecord::Schema.define(:version => 20160304234903) do
     t.integer  "changeset_num",     :default => 0
     t.integer  "board_message_num", :default => 0
     t.integer  "board_num",         :default => 0
-    t.integer  "act_num",           :default => 0
     t.integer  "attach_num",        :default => 0
     t.datetime "commit_time"
   end
diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index 8e83f2e18..1c832b4b3 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -1286,7 +1286,6 @@ a.chooseActive {background-color:#269ac9; color:#ffffff;}
 .subjectType {width:70px; text-align:center;}
 .subjectCount {width:65px; text-align:center;}
 a.contributor_course{float: right; color: #888; font-size: 12px; font-weight: normal;}
-.contributor_course_innor{font-size: 12px;color: #888;padding-left: 36px;}
-.hero_course_innor{font-size: 12px;color: #888;padding-left:77px;}
-.contributor_course_calculate{padding-left: 54px; font-size: 12px;color: #888}
-.color_888{color: #888}
+.active-degree-rule{font-size: 12px;color: #888; text-align: center; cursor: pointer;}
+.hero-degree-rule{font-size: 12px;color: #888;text-align: center;}
+.contributor-course-calculate{padding-left: 54px; font-size: 12px;color: #888}