diff --git a/module/install/js/common.js b/module/install/js/common.js
new file mode 100644
index 0000000000..a5e10e3c26
--- /dev/null
+++ b/module/install/js/common.js
@@ -0,0 +1 @@
+$(function(){$.ajustModalPosition('fit', $('.modal-dialog'))});
diff --git a/module/install/lang/zh-cn.php b/module/install/lang/zh-cn.php
index 2d382ca55c..c4a630fd22 100644
--- a/module/install/lang/zh-cn.php
+++ b/module/install/lang/zh-cn.php
@@ -133,6 +133,5 @@ $lang->install->login    = '登录禅道管理系统';
 $lang->install->register = '禅道社区注册';
 
 $lang->install->joinZentao = <<<EOT
-<p>您已经成功安装禅道管理系统%s，<strong class='text-danger'>请及时删除install.php</strong>。</p>
-<p>友情提示：为了您及时获得禅道的最新动态，请在禅道社区(<a href='http://www.zentao.net' class='alert-link' target='_blank'>www.zentao.net</a>)进行登记。</p>
+<p>您已经成功安装禅道管理系统%s，<strong class='text-danger'>请及时删除install.php</strong>。</p><p>友情提示：为了您及时获得禅道的最新动态，请在禅道社区(<a href='http://www.zentao.net' class='alert-link' target='_blank'>www.zentao.net</a>)进行登记。</p>
 EOT;
diff --git a/module/install/view/step3.html.php b/module/install/view/step3.html.php
index 052b56019f..9d53cfd87c 100644
--- a/module/install/view/step3.html.php
+++ b/module/install/view/step3.html.php
@@ -37,7 +37,7 @@ EOT;
       <strong><?php echo $lang->install->error;?></strong>
     </div>
     <div class='modal-body'>
-      <div class='alert alert-danger'>
+      <div class='alert alert-danger alert-pure with-icon'>
         <i class='icon-info-sign'></i>
         <div class='content'><?php echo $error;?></div>
       </div>
diff --git a/module/install/view/step4.html.php b/module/install/view/step4.html.php
index a1b053df7f..cee62216ef 100644
--- a/module/install/view/step4.html.php
+++ b/module/install/view/step4.html.php
@@ -17,7 +17,7 @@
       <strong><?php echo $lang->install->error;?></strong>
     </div>
     <div class='modal-body'>
-      <div class='alert alert-danger'>
+      <div class='alert alert-danger alert-pure with-icon'>
         <i class='icon-info-sign'></i>
         <div class='content'><?php echo $error;?></div>
       </div>
@@ -30,7 +30,7 @@
       <strong><?php echo $lang->install->success;?></strong>
     </div>
     <div class='modal-body'>
-      <div class='alert alert-success'>
+      <div class='alert alert-success alert-pure with-icon'>
         <i class='icon-ok-sign'></i>
         <div class='content'><?php echo $afterSuccess;?></div>
       </div>
diff --git a/module/install/view/step5.html.php b/module/install/view/step5.html.php
index 90ae6ee0ce..d572fba5ae 100644
--- a/module/install/view/step5.html.php
+++ b/module/install/view/step5.html.php
@@ -16,7 +16,7 @@
       <strong><?php echo $lang->install->success;?></strong>
     </div>
     <div class='modal-body'>
-      <div class='alert alert-success'>
+      <div class='alert with-icon alert-pure'>
         <i class='icon-ok-sign'></i>
         <div class='content'><?php echo nl2br(sprintf($lang->install->joinZentao, $config->version, $this->createLink('admin', 'register'), $this->createLink('admin', 'bind'), inlink('step6')));?></div>
       </div>