diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index fa7180874250f..28496fc7015fe 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -1204,14 +1204,16 @@ th.action-links {
 	overflow: hidden;
 }
 
-.wp-filter .favorites-form .favorites-username {
+.wp-filter .favorites-form .favorites-username,
+.plugin-install-tab-favorites .favorites-username {
 	display: flex;
 	align-items: center;
 	flex-wrap: wrap;
 	gap: 0.5rem;
 }
 
-.wp-filter .favorites-form .favorites-username input {
+.wp-filter .favorites-form .favorites-username input,
+.plugin-install-tab-favorites .favorites-username input {
 	margin: 0;
 }
 
diff --git a/src/wp-admin/includes/plugin-install.php b/src/wp-admin/includes/plugin-install.php
index 7607b8823bb99..7dc4554c8786b 100644
--- a/src/wp-admin/includes/plugin-install.php
+++ b/src/wp-admin/includes/plugin-install.php
@@ -370,7 +370,7 @@ function install_plugins_favorites_form() {
 	<p><?php _e( 'If you have marked plugins as favorites on WordPress.org, you can browse them here.' ); ?></p>
 	<form method="get">
 		<input type="hidden" name="tab" value="favorites" />
-		<p>
+		<p class="favorites-username">
 			<label for="user"><?php _e( 'Your WordPress.org username:' ); ?></label>
 			<input type="search" id="user" name="user" value="<?php echo esc_attr( $user ); ?>" />
 			<input type="submit" class="button" value="<?php esc_attr_e( 'Get Favorites' ); ?>" />