From 3b65def3d9b1f3005fb5684bb369ccc6bcc9044b Mon Sep 17 00:00:00 2001
From: Andrew Serong <14988353+andrewserong@users.noreply.github.com>
Date: Thu, 19 Jan 2023 15:11:57 +1100
Subject: [PATCH 1/3] Safe style css: Add position CSS properties to support
 position controls in blocks

---
 src/wp-includes/kses.php     | 7 +++++++
 tests/phpunit/tests/kses.php | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/src/wp-includes/kses.php b/src/wp-includes/kses.php
index 157be6be119f1..ae49f6b878ff0 100644
--- a/src/wp-includes/kses.php
+++ b/src/wp-includes/kses.php
@@ -2438,6 +2438,13 @@ function safecss_filter_attr( $css, $deprecated = '' ) {
 			'overflow',
 			'vertical-align',
 
+			'position',
+			'top',
+			'right',
+			'bottom',
+			'left',
+			'z-index',
+
 			// Custom CSS properties.
 			'--*',
 		)
diff --git a/tests/phpunit/tests/kses.php b/tests/phpunit/tests/kses.php
index b31f477661d8c..97c2d893f653e 100644
--- a/tests/phpunit/tests/kses.php
+++ b/tests/phpunit/tests/kses.php
@@ -1278,6 +1278,11 @@ public function data_test_safecss_filter_attr() {
 				'css'      => '--?><.%-not-allowed: red;',
 				'expected' => '',
 			),
+			// Position properties introduced in 6.2.
+			array(
+				'css'      => 'position: sticky;top: 0;left: 0;right: 0;bottom: 0;z-index: 10;',
+				'expected' => 'position: sticky;top: 0;left: 0;right: 0;bottom: 0;z-index: 10',
+			)
 		);
 	}
 

From 1b7ff5ab142459ea18a517093b5868f5c69d4465 Mon Sep 17 00:00:00 2001
From: Andrew Serong <14988353+andrewserong@users.noreply.github.com>
Date: Thu, 19 Jan 2023 15:47:11 +1100
Subject: [PATCH 2/3] Add trailing comma

---
 tests/phpunit/tests/kses.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/phpunit/tests/kses.php b/tests/phpunit/tests/kses.php
index 97c2d893f653e..32edc4df5618d 100644
--- a/tests/phpunit/tests/kses.php
+++ b/tests/phpunit/tests/kses.php
@@ -1282,7 +1282,7 @@ public function data_test_safecss_filter_attr() {
 			array(
 				'css'      => 'position: sticky;top: 0;left: 0;right: 0;bottom: 0;z-index: 10;',
 				'expected' => 'position: sticky;top: 0;left: 0;right: 0;bottom: 0;z-index: 10',
-			)
+			),
 		);
 	}
 

From 08ccde650e44c66f327ef91103b3887b5c407705 Mon Sep 17 00:00:00 2001
From: Andrew Serong <14988353+andrewserong@users.noreply.github.com>
Date: Thu, 19 Jan 2023 16:46:47 +1100
Subject: [PATCH 3/3] Add line to comment

---
 src/wp-includes/kses.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/wp-includes/kses.php b/src/wp-includes/kses.php
index ae49f6b878ff0..5766beb92fb29 100644
--- a/src/wp-includes/kses.php
+++ b/src/wp-includes/kses.php
@@ -2277,6 +2277,7 @@ function kses_init() {
  *              nested `var()` values, and assigning values to CSS variables.
  *              Added support for `object-fit`, `gap`, `column-gap`, `row-gap`, and `flex-wrap`.
  *              Extended `margin-*` and `padding-*` support for logical properties.
+ * @since 6.2.0 Added support for `position`, `top`, `right`, `bottom`, `left` and `z-index` position CSS properties.
  *
  * @param string $css        A string of CSS rules.
  * @param string $deprecated Not used.