diff --git a/wp-content/themes/twentyten/blocks.css b/wp-content/themes/twentyten/blocks.css
index 3f9995347b..fc751d61ea 100644
--- a/wp-content/themes/twentyten/blocks.css
+++ b/wp-content/themes/twentyten/blocks.css
@@ -124,8 +124,13 @@ p.has-drop-cap:not(:focus)::first-letter {
 
 /* Pullquote */
 
+.wp-block-pullquote {
+	font-size: 1em;
+}
+
 .wp-block-pullquote p {
 	font-size: 1.5em;
+	line-height: 1.3;
 }
 
 .wp-block-pullquote__citation,
diff --git a/wp-content/themes/twentyten/editor-blocks.css b/wp-content/themes/twentyten/editor-blocks.css
index 3baf3bb5fd..071e0a1995 100644
--- a/wp-content/themes/twentyten/editor-blocks.css
+++ b/wp-content/themes/twentyten/editor-blocks.css
@@ -261,9 +261,14 @@ p.has-drop-cap:not(:focus)::first-letter {
 
 /* Pullquote */
 
+.wp-block-pullquote {
+	font-size: 1em;
+}
+
 .wp-block-pullquote blockquote > p.rich-text,
 .wp-block-pullquote blockquote > .editor-rich-text p {
 	font-size: 1.5em;
+	line-height: 1.3;
 }
 
 .wp-block-pullquote .wp-block-pullquote__citation {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ce3ae21bf5..e868d0c3ba 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55977';
+$wp_version = '6.3-alpha-55978';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.