diff --git a/view/css/default.css b/view/css/default.css
index 56173f932..2675bc2d8 100644
--- a/view/css/default.css
+++ b/view/css/default.css
@@ -14,10 +14,8 @@ main {
 	height: 100%;
 }
 
-aside#region_1 {
-	width: 231px;
-	min-width: 231px;
-	max-width: 231px;
+aside#region_1,
+aside#region_3 {
 	display: table-cell;
 	vertical-align: top;
 	padding: 65px 7px 0px 7px;
diff --git a/view/php/default.php b/view/php/default.php
index 01cd8a0d4..4c8311ef0 100644
--- a/view/php/default.php
+++ b/view/php/default.php
@@ -14,7 +14,7 @@
 					<div id="page-footer"></div>
 			<div id="pause"></div>
 		</section>
-		<aside id="region_3"><?php if(x($page,'right_aside')) echo $page['right_aside']; ?></aside>
+		<aside id="region_3" class="hidden-sm hidden-xs"><?php if(x($page,'right_aside')) echo $page['right_aside']; ?></aside>
 	</main>
 	<footer><?php if(x($page,'footer')) echo $page['footer']; ?></footer>
 </body>
diff --git a/view/theme/redbasic/css/style.css b/view/theme/redbasic/css/style.css
index a671a6671..1c575a63e 100644
--- a/view/theme/redbasic/css/style.css
+++ b/view/theme/redbasic/css/style.css
@@ -24,8 +24,14 @@ body {
 	height: 100%;
 }
 
+aside {
+	width: $aside_widthpx;
+	min-width: $aside_widthpx;
+	max-width: $aside_widthpx;
+}
+
 main {
-	max-width: $main_width;
+	max-width: $main_widthpx;
 }
 
 h1, .h1, h2, .h2 {
@@ -2097,8 +2103,8 @@ nav .badge.mail-update:hover {
 	}
 
 	main {
-		left: -231px;
-		width: calc( 100% + 231px );
+		left: -$aside_widthpx;
+		width: calc( 100% + $aside_widthpx );
 	}
 
 	main.region_1-on {
diff --git a/view/theme/redbasic/php/style.php b/view/theme/redbasic/php/style.php
index c6231e690..5a28fc4e3 100644
--- a/view/theme/redbasic/php/style.php
+++ b/view/theme/redbasic/php/style.php
@@ -153,11 +153,13 @@ if(file_exists('view/theme/redbasic/css/style.css')) {
 
 	$x = file_get_contents('view/theme/redbasic/css/style.css');
 
-	// left aside is 231px + converse width
-	$main_width = (231 + intval($converse_width));
+	$aside_width = 231;
+
+	// left aside and right aside are is 231px + converse width
+	$main_width = (($aside_width * 2) + intval($converse_width));
 
 	// prevent main_width smaller than 768px
-	$main_width = (($main_width < 768) ? 768 : $main_width) . 'px';
+	$main_width = (($main_width < 768) ? 768 : $main_width);
 
 	$options = array (
 		'$nav_bg' => $nav_bg,
@@ -191,6 +193,7 @@ if(file_exists('view/theme/redbasic/css/style.css')) {
 		'$pmenu_reply' => $pmenu_reply,
 		'$comment_indent' => $comment_indent,
 		'$main_width' => $main_width,
+		'$aside_width' => $aside_width
 	);
 
 	echo str_replace(array_keys($options), array_values($options), $x);