diff --git a/app/controllers/wechats_controller.rb b/app/controllers/wechats_controller.rb
index 3a6be2016..00585722c 100644
--- a/app/controllers/wechats_controller.rb
+++ b/app/controllers/wechats_controller.rb
@@ -128,6 +128,10 @@ class WechatsController < ActionController::Base
     default_msg(request)
   end
 
+  on :click, with: 'JOIN_CLASS' do |reques, key|
+    request.reply.text "请直接回复班级邀请码 (不区分大小写):"
+  end
+
   def default_msg(request)
     uw = user_binded?(request[:FromUserName])
     if uw && uw.user
diff --git a/public/stylesheets/weui/weixin.css b/public/stylesheets/weui/weixin.css
index d30d6bf8a..ab8081173 100644
--- a/public/stylesheets/weui/weixin.css
+++ b/public/stylesheets/weui/weixin.css
@@ -112,7 +112,7 @@ a.underline {text-decoration:underline;}
 .loading-box span {display: block; font-size:12px;}
 
 /*帖子锁定样式*/
-.locked_btn_cir {background: url("/images/locked.png") 0 0 no-repeat; cursor: default;}
+.locked_btn_cir {background: url("/images/wechat/locked.png") 0 0 no-repeat; cursor: default;}
 
 /*20150612加入班级样式*/
 .add-class-box {width:80%; max-width:300px; min-width:240px; height:150px; font-size:15px; color:#444; background-color:#fff; margin:0 auto; box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5); border-radius:5px; margin-top:100px;}
@@ -167,7 +167,7 @@ a.underline {text-decoration:underline;}
 /*20160616登录注册*/
 .login-wrap {padding:0 10px;}
 .input-box-wrap {padding-right:17px;}
-.input-box {    -webkit-appearance: none; font-size: 16px;width:100%; height:36px; padding-left:5px; line-height:36px; border:1px solid #ccc; border-radius:5px;}
+.input-box { -webkit-appearance: none; font-size: 16px;width:100%; height:16px; padding: 10px 0px 10px 5px; line-height:16px; border:1px solid #ccc; border-radius:5px;}
 .login-op-wrap {height:30px; line-height:30px; vertical-align:middle;}
 .login-box{display:inline-block; width:14px; height:14px; line-height:14px; text-align:center; vertical-align:middle; border:1px solid #ccc; background:#fff; border-radius:3px; color:#fff; cursor:pointer;}
 .login-box.checked{background:#63c360;}