diff --git a/header.php b/header.php
index 242e02d..83c7562 100644
--- a/header.php
+++ b/header.php
@@ -20,7 +20,7 @@
 	<?php wp_head(); ?>
 </head>
 
-<body <?php body_class(); ?>>
+<body <?php body_class(); ?> data-barba="wrapper">
 <svg style="display: none;" xmlns="http://www.w3.org/2000/svg">
 	<defs>
 		<symbol id="icon-pressbooks" fill="currentColor" viewBox="0 0 45 44">
