diff --git a/core/modules/overlay/overlay-child-rtl.css b/core/modules/overlay/overlay-child-rtl.css
index 4195530..207b5ec 100644
--- a/core/modules/overlay/overlay-child-rtl.css
+++ b/core/modules/overlay/overlay-child-rtl.css
@@ -12,7 +12,7 @@ html {
   float: right;
   left: auto;
 }
-#overlay {
+#overlay-wrapper {
   padding: 0.2em;
   padding-left: 26px;
 }
diff --git a/core/modules/overlay/overlay-child.css b/core/modules/overlay/overlay-child.css
index ecfa4cb..6695480 100644
--- a/core/modules/overlay/overlay-child.css
+++ b/core/modules/overlay/overlay-child.css
@@ -15,7 +15,7 @@
   padding: 20px 0;
 }
 
-#overlay {
+#overlay-wrapper {
   display: table;
   margin: 0 auto;
   min-height: 100px;
diff --git a/core/modules/overlay/templates/overlay.tpl.php b/core/modules/overlay/templates/overlay.tpl.php
index 38e6664..1c3b1ed 100644
--- a/core/modules/overlay/templates/overlay.tpl.php
+++ b/core/modules/overlay/templates/overlay.tpl.php
@@ -22,7 +22,7 @@
 ?>
 
 <?php print render($disable_overlay); ?>
-<div id="overlay" <?php print $attributes; ?>>
+<div id="overlay-wrapper" <?php print $attributes; ?>>
   <div id="overlay-titlebar" class="clearfix">
     <div id="overlay-title-wrapper" class="clearfix">
       <h1 id="overlay-title"<?php print $title_attributes; ?>><?php print $title; ?></h1>