diff --git a/header.php b/header.php
index 9b30d61..b2f6304 100644
--- a/header.php
+++ b/header.php
@@ -66,7 +66,7 @@
 
 
                 } else if ($blog_slug == '2023') {
-					echo '<section class="banner cf" style="background: url('.get_template_directory_uri().'/img/banner-back-2023.png) top center no-repeat;padding: 0.2em 0 0 0;height: 258px;"><img src="'.get_template_directory_uri().'/img/banner-'.of_get_lang().'-2023.png" alt="" style="margin-left: calc(50vw - 428px);" /></section>';
+					echo '<section class="banner cf" style="background: url('.get_template_directory_uri().'/img/banner-back-2023.png) top center no-repeat;padding: 0.2em 0 0 0;height: 258px;"><img src="'.get_template_directory_uri().'/img/banner-'.of_get_lang().'-2023.png" alt="" style="margin-left: calc(40vw - 428px);" /></section>';
 
                 } else {
 					echo '<section class="banner cf" style="background: url(\''.get_template_directory_uri().'/img/banner-back-'.$blog_slug.'.jpg\') top repeat-x;padding: 0.2em 0 0 0;height: 258px;"><img src="'.get_template_directory_uri().'/img/banner-'.of_get_lang().'-'. $blog_slug .'.png" alt="" /></section>';