diff --git a/public/assets/wechat/blog_detail.html b/public/assets/wechat/blog_detail.html
index 05f7d965a..ceac87d03 100644
--- a/public/assets/wechat/blog_detail.html
+++ b/public/assets/wechat/blog_detail.html
@@ -49,7 +49,7 @@
 
             </div>
 
-            <div ng-if="!blog.locked" id="post_input_1" class="post-input-wrap2">
+            <div ng-if="!blog.locked" id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/course_discussion.html b/public/assets/wechat/course_discussion.html
index 5bfb462a3..4c2d2ff03 100644
--- a/public/assets/wechat/course_discussion.html
+++ b/public/assets/wechat/course_discussion.html
@@ -46,7 +46,7 @@
                     </div>
                 </div>
 
-                <div ng-if="!discussion.locked" id="post_input_1" class="post-input-wrap2">
+                <div ng-if="!discussion.locked" id="post_input_1" class="post-input-wrap post-box-shadow">
                     <div class="post-reply-row">
                         <div class="post-input-container">
                             <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/course_notice.html b/public/assets/wechat/course_notice.html
index d48dbd136..e1d131297 100644
--- a/public/assets/wechat/course_notice.html
+++ b/public/assets/wechat/course_notice.html
@@ -45,7 +45,7 @@
                 </div>
             </div>
 
-            <div id="post_input_1" class="post-input-wrap2">
+            <div id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/homework_detail.html b/public/assets/wechat/homework_detail.html
index b156a0e32..bee40bfdf 100644
--- a/public/assets/wechat/homework_detail.html
+++ b/public/assets/wechat/homework_detail.html
@@ -51,7 +51,7 @@
 
             </div>
 
-            <div id="post_input_1" class="post-input-wrap2">
+            <div id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/issue_detail.html b/public/assets/wechat/issue_detail.html
index 998cb58a6..dd9503a5b 100644
--- a/public/assets/wechat/issue_detail.html
+++ b/public/assets/wechat/issue_detail.html
@@ -51,7 +51,7 @@
                 </div>
             </div>
 
-            <div id="post_input_1" class="post-input-wrap2">
+            <div id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/jour_message_detail.html b/public/assets/wechat/jour_message_detail.html
index e7a48e9ab..cf5e1d2c9 100644
--- a/public/assets/wechat/jour_message_detail.html
+++ b/public/assets/wechat/jour_message_detail.html
@@ -47,7 +47,7 @@
 
             </div>
 
-            <div id="post_input_1" class="post-input-wrap2">
+            <div id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>
diff --git a/public/assets/wechat/project_discussion.html b/public/assets/wechat/project_discussion.html
index 1757822ab..b90d35b91 100644
--- a/public/assets/wechat/project_discussion.html
+++ b/public/assets/wechat/project_discussion.html
@@ -46,7 +46,7 @@
                     </div>
                 </div>
             </div>
-            <div ng-if="!discussion.locked" id="post_input_1" class="post-input-wrap2">
+            <div ng-if="!discussion.locked" id="post_input_1" class="post-input-wrap post-box-shadow">
                 <div class="post-reply-row">
                     <div class="post-input-container">
                         <textarea class="copy-input"></textarea>