Bundled Themes: Twenty Twenty inconsistent top and bottom margins for .alignwide and .alignfull on Chrome vs Safari.

Fixes the inconsistent margins for `alignwide` and `alignfull` classes used on Cover Block when it is the first block on a page.

Props kthmd, utz119, nikhilbhansi.
Fixes #49435.
Built from https://develop.svn.wordpress.org/trunk@47820


git-svn-id: http://core.svn.wordpress.org/trunk@47596 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentytwenty/style.css

@@ -3530,6 +3530,11 @@ figure.wp-block-table.is-style-stripes {
 	margin: 4rem auto;
 }
 
+.post-inner .entry-content > .wp-block-cover.alignwide:first-child,
+.post-inner .entry-content > .wp-block-cover.alignfull:first-child {
+	margin-top: 0;
+}
+
 /* Font Families ----------------------------- */
 
 .entry-content {
@@ -5408,6 +5413,11 @@ a.to-the-top > * {
 		margin-right: 4rem;
 	}
 
+	.entry-content > .alignwide:first-child,
+	.entry-content > .alignfull:first-child {
+		margin-bottom: 8rem;
+	}
+
 	/* ENTRY MEDIA */
 
 	.alignfull > figcaption,
@@ -5917,7 +5927,7 @@ a.to-the-top > * {
 		/*rtl:ignore*/
 		margin-left: 0;
 	}
-  
+
     .wp-block-image .aligncenter figcaption {
         text-align: center;
     }

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47819';
+$wp_version = '5.5-alpha-47820';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.