diff --git a/framework/yii/views/errorHandler.php b/framework/yii/views/errorHandler.php
index 92aa812..a7fe09a 100644
--- a/framework/yii/views/errorHandler.php
+++ b/framework/yii/views/errorHandler.php
@@ -147,12 +147,21 @@ $title = $c->htmlEncode($e instanceof \yii\base\Exception ? $e->getName() : get_
 		}
 
 		/* code */
+		#code-wrap{
+			overflow: hidden;
+			position: relative;
+		}
 		#code-highlighter{
 			background-color: #ffffff;
 			position: fixed;
 			width: 100%;
 			z-index: 100;
 		}
+		#code-inner-wrap{
+			min-width: 860px; /* padding compensation: 960px - 50px * 2 */
+			max-width: 1100px; /* padding compensation: 1200px - 50px * 2 */
+			margin: 0 auto;
+		}
 		pre{
 			display: inline;
 			color: #505050;
@@ -223,8 +232,10 @@ $title = $c->htmlEncode($e instanceof \yii\base\Exception ? $e->getName() : get_
 	</div>
 
 	<div class="request">
-		<div id="code-highlighter"></div>
-		<pre id="code">$_GET = [
+		<div id="code-wrap"></div>
+			<div id="code-highlighter"></div>
+			<div id="code-inner-wrap">
+			<pre id="code">$_GET = [
 	'show-post' => 100,
 	'refresh-page' => 'yes',
 	'ascending-sort' => 1,
@@ -260,6 +271,8 @@ $_SERVER = [
 	'REQUEST_TIME_FLOAT' => 1369146454.0856,
 	'REQUEST_TIME' => 1369146454,
 ];</pre>
+		</div>
+		</div>
 	</div>
 
 	<div class="footer">
@@ -269,29 +282,31 @@ $_SERVER = [
 		<p><a href="http://yiiframework.com/">Yii Framework</a>/<a href="#">2.0-dev</a></p>
 	</div>
 
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