Index: src/wp-admin/css/common.css
===================================================================
--- src/wp-admin/css/common.css	(revision 56151)
+++ src/wp-admin/css/common.css	(working copy)
@@ -581,11 +581,6 @@
 	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 */
Index: src/wp-admin/edit-form-blocks.php
===================================================================
--- src/wp-admin/edit-form-blocks.php	(revision 56151)
+++ src/wp-admin/edit-form-blocks.php	(working copy)
@@ -319,7 +319,7 @@
 	<?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(
Index: src/wp-admin/site-editor.php
===================================================================
--- src/wp-admin/site-editor.php	(revision 56151)
+++ src/wp-admin/site-editor.php	(working copy)
@@ -172,7 +172,7 @@
 	<?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
 					/**