添加开发测试环境的左上角提示

 <header>
     <div class="headerwrapper">
         <div class="header-left">
-            <a href="javascript:;" class="logo">
+            <a href="/" class="logo">
+                <?php if (YII_ENV == 'prod'):?>
                 <img src="/images/logo.png" alt="" /> 
+                <?php else:?>
+                <strong>开发/测试环境</strong>
+                <?php endif;?>
             </a>
             <div class="pull-right">
                 <a href="" class="menu-collapse">

@@ -111,6 +111,7 @@ a:focus {
     display: inline-block;
     margin-top: 5px;
     float: left;
+    color:white;
 }
 
 .headerwrapper .header-left .menu-collapse {