diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index b08e7bf449..a7b04fa37c 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -581,11 +581,6 @@ code {
 	margin: 10px 20px 0 2px;
 }
 
-.wrap.block-editor-no-js,
-.wrap.site-editor-no-js {
-	padding-left: 20px;
-}
-
 .wrap > h2:first-child, /* Back-compat for pre-4.4 */
 .wrap [class$="icon32"] + h2, /* Back-compat for pre-4.4 */
 .postbox .inside h2, /* Back-compat for pre-4.4 */
diff --git a/src/wp-admin/edit-form-blocks.php b/src/wp-admin/edit-form-blocks.php
index e324a4e1b7..66a6bbfc25 100644
--- a/src/wp-admin/edit-form-blocks.php
+++ b/src/wp-admin/edit-form-blocks.php
@@ -319,7 +319,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 	<?php // JavaScript is disabled. ?>
 	<div class="wrap hide-if-js block-editor-no-js">
 		<h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>
-		<div class="notice notice-error notice-alt">
+		<div class="notice notice-error">
 			<p>
 				<?php
 					$message = sprintf(
diff --git a/src/wp-admin/site-editor.php b/src/wp-admin/site-editor.php
index c66c91f099..4470967481 100644
--- a/src/wp-admin/site-editor.php
+++ b/src/wp-admin/site-editor.php
@@ -172,7 +172,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 	<?php // JavaScript is disabled. ?>
 	<div class="wrap hide-if-js site-editor-no-js">
 		<h1 class="wp-heading-inline"><?php _e( 'Edit site' ); ?></h1>
-		<div class="notice notice-error notice-alt">
+		<div class="notice notice-error">
 			<p>
 				<?php
 					/**