diff --git a/theme/boost/templates/embedded.mustache b/theme/boost/templates/embedded.mustache
index ce62a560154..dfceb0a6934 100644
--- a/theme/boost/templates/embedded.mustache
+++ b/theme/boost/templates/embedded.mustache
@@ -45,7 +45,7 @@
 
 {{{ output.standard_top_of_body_html }}}
 <div id="page">
-    <div id="page-content">
+    <div id="page-content" class="d-block">
         {{{ output.main_content }}}
     </div>
 </div>