diff --git a/src/wp-includes/class-wp-theme-json.php b/src/wp-includes/class-wp-theme-json.php
index e6ca23bff310d..0cb7405ab548d 100644
--- a/src/wp-includes/class-wp-theme-json.php
+++ b/src/wp-includes/class-wp-theme-json.php
@@ -2738,6 +2738,8 @@ private static function get_block_nodes( $theme_json, $selectors = array(), $opt
 	 * @since 6.6.0 Setting a min-height of HTML when root styles have a background gradient or image.
 	 *              Updated general global styles specificity to 0-1-0.
 	 *              Fixed custom CSS output in block style variations.
+	 * @since 6.6.1 Avoid applying `:root :where()` wrapper to top-level element-only selectors.
+	 * @since 6.6.2 Avoid applying `:root :where()` wrapper to root selectors.
 	 *
 	 * @param array $block_metadata Metadata about the block to get styles for.
 	 *
@@ -2892,6 +2894,9 @@ static function ( $pseudo_selector ) use ( $selector ) {
 		}
 
 		/*
+		 * Root selector (body) styles should not be wrapped in `:root where()` to keep
+		 * specificity at (0,0,1) and maintain backwards compatibility.
+		 *
 		 * Top-level element styles using element-only specificity selectors should
 		 * not get wrapped in `:root :where()` to maintain backwards compatibility.
 		 *
@@ -2899,11 +2904,13 @@ static function ( $pseudo_selector ) use ( $selector ) {
 		 * still need to be wrapped in `:root :where` to cap specificity for nested
 		 * variations etc. Pseudo selectors won't match the ELEMENTS selector exactly.
 		 */
-		$element_only_selector = $current_element &&
+		$element_only_selector = $is_root_selector || (
+			$current_element &&
 			isset( static::ELEMENTS[ $current_element ] ) &&
 			// buttons, captions etc. still need `:root :where()` as they are class based selectors.
 			! isset( static::__EXPERIMENTAL_ELEMENT_CLASS_NAMES[ $current_element ] ) &&
-			static::ELEMENTS[ $current_element ] === $selector;
+			static::ELEMENTS[ $current_element ] === $selector
+		);
 
 		// 2. Generate and append the rules that use the general selector.
 		$general_selector = $element_only_selector ? $selector : ":root :where($selector)";
diff --git a/tests/phpunit/tests/theme/wpThemeJson.php b/tests/phpunit/tests/theme/wpThemeJson.php
index 57d25ab8e6f03..8ca4393f0daa2 100644
--- a/tests/phpunit/tests/theme/wpThemeJson.php
+++ b/tests/phpunit/tests/theme/wpThemeJson.php
@@ -396,6 +396,7 @@ public function test_get_settings_appearance_false_does_not_opt_in() {
 	 * @ticket 60936
 	 * @ticket 61165
 	 * @ticket 61630
+	 * @ticket 61704
 	 */
 	public function test_get_stylesheet() {
 		$theme_json = new WP_Theme_JSON(
@@ -566,7 +567,7 @@ public function test_get_stylesheet() {
 		);
 
 		$variables = ':root{--wp--preset--color--grey: grey;--wp--preset--gradient--custom-gradient: linear-gradient(135deg,rgba(0,0,0) 0%,rgb(0,0,0) 100%);--wp--preset--font-size--small: 14px;--wp--preset--font-size--big: 41px;--wp--preset--font-family--arial: Arial, serif;}.wp-block-group{--wp--custom--base-font: 16;--wp--custom--line-height--small: 1.2;--wp--custom--line-height--medium: 1.4;--wp--custom--line-height--large: 1.8;}';
-		$styles    = ':where(body) { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:root :where(body){color: var(--wp--preset--color--grey);}a:where(:not(.wp-element-button)){background-color: #333;color: #111;}:root :where(.wp-element-button, .wp-block-button__link){box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.66);}:root :where(.wp-block-cover){min-height: unset;aspect-ratio: 16/9;}:root :where(.wp-block-group){background: var(--wp--preset--gradient--custom-gradient);border-radius: 10px;min-height: 50vh;padding: 24px;}:root :where(.wp-block-group a:where(:not(.wp-element-button))){color: #111;}:root :where(.wp-block-heading){color: #123456;}:root :where(.wp-block-heading a:where(:not(.wp-element-button))){background-color: #333;color: #111;font-size: 60px;}:root :where(.wp-block-media-text){text-align: center;}:root :where(.wp-block-post-date){color: #123456;}:root :where(.wp-block-post-date a:where(:not(.wp-element-button))){background-color: #777;color: #555;}:root :where(.wp-block-post-excerpt){column-count: 2;}:root :where(.wp-block-image){margin-bottom: 30px;}:root :where(.wp-block-image img, .wp-block-image .wp-block-image__crop-area, .wp-block-image .components-placeholder){border-top-left-radius: 10px;border-bottom-right-radius: 1em;}:root :where(.wp-block-image img, .wp-block-image .components-placeholder){filter: var(--wp--preset--duotone--custom-duotone);}';
+		$styles    = ':where(body) { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}body{color: var(--wp--preset--color--grey);}a:where(:not(.wp-element-button)){background-color: #333;color: #111;}:root :where(.wp-element-button, .wp-block-button__link){box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.66);}:root :where(.wp-block-cover){min-height: unset;aspect-ratio: 16/9;}:root :where(.wp-block-group){background: var(--wp--preset--gradient--custom-gradient);border-radius: 10px;min-height: 50vh;padding: 24px;}:root :where(.wp-block-group a:where(:not(.wp-element-button))){color: #111;}:root :where(.wp-block-heading){color: #123456;}:root :where(.wp-block-heading a:where(:not(.wp-element-button))){background-color: #333;color: #111;font-size: 60px;}:root :where(.wp-block-media-text){text-align: center;}:root :where(.wp-block-post-date){color: #123456;}:root :where(.wp-block-post-date a:where(:not(.wp-element-button))){background-color: #777;color: #555;}:root :where(.wp-block-post-excerpt){column-count: 2;}:root :where(.wp-block-image){margin-bottom: 30px;}:root :where(.wp-block-image img, .wp-block-image .wp-block-image__crop-area, .wp-block-image .components-placeholder){border-top-left-radius: 10px;border-bottom-right-radius: 1em;}:root :where(.wp-block-image img, .wp-block-image .components-placeholder){filter: var(--wp--preset--duotone--custom-duotone);}';
 		$presets   = '.has-grey-color{color: var(--wp--preset--color--grey) !important;}.has-grey-background-color{background-color: var(--wp--preset--color--grey) !important;}.has-grey-border-color{border-color: var(--wp--preset--color--grey) !important;}.has-custom-gradient-gradient-background{background: var(--wp--preset--gradient--custom-gradient) !important;}.has-small-font-size{font-size: var(--wp--preset--font-size--small) !important;}.has-big-font-size{font-size: var(--wp--preset--font-size--big) !important;}.has-arial-font-family{font-family: var(--wp--preset--font-family--arial) !important;}';
 		$all       = $variables . $styles . $presets;
 
@@ -1365,6 +1366,7 @@ public function test_get_stylesheet_custom_root_selector() {
 	 * @ticket 61118
 	 * @ticket 61165
 	 * @ticket 61630
+	 * @ticket 61704
 	 */
 	public function test_get_stylesheet_generates_fluid_typography_values() {
 		register_block_type(
@@ -1419,7 +1421,7 @@ public function test_get_stylesheet_generates_fluid_typography_values() {
 		unregister_block_type( 'test/clamp-me' );
 
 		$this->assertSame(
-			':root{--wp--preset--font-size--pickles: clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.156), 16px);--wp--preset--font-size--toast: clamp(14.642px, 0.915rem + ((1vw - 3.2px) * 0.575), 22px);}:root :where(body){font-size: clamp(0.875em, 0.875rem + ((1vw - 0.2em) * 0.156), 1em);}h1{font-size: clamp(50.171px, 3.136rem + ((1vw - 3.2px) * 3.893), 100px);}:root :where(.wp-block-test-clamp-me){font-size: clamp(27.894px, 1.743rem + ((1vw - 3.2px) * 1.571), 48px);}.has-pickles-font-size{font-size: var(--wp--preset--font-size--pickles) !important;}.has-toast-font-size{font-size: var(--wp--preset--font-size--toast) !important;}',
+			':root{--wp--preset--font-size--pickles: clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.156), 16px);--wp--preset--font-size--toast: clamp(14.642px, 0.915rem + ((1vw - 3.2px) * 0.575), 22px);}body{font-size: clamp(0.875em, 0.875rem + ((1vw - 0.2em) * 0.156), 1em);}h1{font-size: clamp(50.171px, 3.136rem + ((1vw - 3.2px) * 3.893), 100px);}:root :where(.wp-block-test-clamp-me){font-size: clamp(27.894px, 1.743rem + ((1vw - 3.2px) * 1.571), 48px);}.has-pickles-font-size{font-size: var(--wp--preset--font-size--pickles) !important;}.has-toast-font-size{font-size: var(--wp--preset--font-size--toast) !important;}',
 			$theme_json->get_stylesheet( array( 'styles', 'variables', 'presets' ), null, array( 'skip_root_layout_styles' => true ) )
 		);
 	}
@@ -3548,6 +3550,7 @@ public function test_get_element_class_name_invalid() {
 	 * @ticket 58550
 	 * @ticket 60936
 	 * @ticket 61165
+	 * @ticket 61704
 	 */
 	public function test_get_property_value_valid() {
 		$theme_json = new WP_Theme_JSON(
@@ -3570,7 +3573,7 @@ public function test_get_property_value_valid() {
 			)
 		);
 
-		$expected = ':root :where(body){background-color: #ffffff;color: #000000;}:root :where(.wp-element-button, .wp-block-button__link){background-color: #000000;color: #ffffff;}';
+		$expected = 'body{background-color: #ffffff;color: #000000;}:root :where(.wp-element-button, .wp-block-button__link){background-color: #000000;color: #ffffff;}';
 		$this->assertSame( $expected, $theme_json->get_stylesheet( array( 'styles' ), null, array( 'skip_root_layout_styles' => true ) ) );
 	}
 
@@ -3630,6 +3633,7 @@ public function data_get_property_value_should_return_string_for_invalid_paths_o
 	 * @ticket 58550
 	 * @ticket 60936
 	 * @ticket 61165
+	 * @ticket 61704
 	 * @expectedIncorrectUsage get_property_value
 	 */
 	public function test_get_property_value_loop() {
@@ -3653,7 +3657,7 @@ public function test_get_property_value_loop() {
 			)
 		);
 
-		$expected = ':root :where(body){background-color: #ffffff;}:root :where(.wp-element-button, .wp-block-button__link){color: #ffffff;}';
+		$expected = 'body{background-color: #ffffff;}:root :where(.wp-element-button, .wp-block-button__link){color: #ffffff;}';
 		$this->assertSame( $expected, $theme_json->get_stylesheet( array( 'styles' ), null, array( 'skip_root_layout_styles' => true ) ) );
 	}
 
@@ -3666,6 +3670,7 @@ public function test_get_property_value_loop() {
 	 * @ticket 58550
 	 * @ticket 60936
 	 * @ticket 61165
+	 * @ticket 61704
 	 * @expectedIncorrectUsage get_property_value
 	 */
 	public function test_get_property_value_recursion() {
@@ -3689,7 +3694,7 @@ public function test_get_property_value_recursion() {
 			)
 		);
 
-		$expected = ':root :where(body){background-color: #ffffff;color: #ffffff;}:root :where(.wp-element-button, .wp-block-button__link){color: #ffffff;}';
+		$expected = 'body{background-color: #ffffff;color: #ffffff;}:root :where(.wp-element-button, .wp-block-button__link){color: #ffffff;}';
 		$this->assertSame( $expected, $theme_json->get_stylesheet( array( 'styles' ), null, array( 'skip_root_layout_styles' => true ) ) );
 	}
 
@@ -3701,6 +3706,7 @@ public function test_get_property_value_recursion() {
 	 * @ticket 58550
 	 * @ticket 60936
 	 * @ticket 61165
+	 * @ticket 61704
 	 * @expectedIncorrectUsage get_property_value
 	 */
 	public function test_get_property_value_self() {
@@ -3716,7 +3722,7 @@ public function test_get_property_value_self() {
 			)
 		);
 
-		$expected = ':root :where(body){background-color: #ffffff;}';
+		$expected = 'body{background-color: #ffffff;}';
 		$this->assertSame( $expected, $theme_json->get_stylesheet( array( 'styles' ), null, array( 'skip_root_layout_styles' => true ) ) );
 	}
 
@@ -3726,6 +3732,7 @@ public function test_get_property_value_self() {
 	 * @ticket 60936
 	 * @ticket 61304
 	 * @ticket 61165
+	 * @ticket 61704
 	 */
 	public function test_get_styles_for_block_with_padding_aware_alignments() {
 		$theme_json = new WP_Theme_JSON(
@@ -3752,7 +3759,7 @@ public function test_get_styles_for_block_with_padding_aware_alignments() {
 			'selector' => 'body',
 		);
 
-		$expected    = ':where(body) { margin: 0; }.wp-site-blocks { padding-top: var(--wp--style--root--padding-top); padding-bottom: var(--wp--style--root--padding-bottom); }.has-global-padding { padding-right: var(--wp--style--root--padding-right); padding-left: var(--wp--style--root--padding-left); }.has-global-padding > .alignfull { margin-right: calc(var(--wp--style--root--padding-right) * -1); margin-left: calc(var(--wp--style--root--padding-left) * -1); }.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) { padding-right: 0; padding-left: 0; }.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) > .alignfull { margin-left: 0; margin-right: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:root :where(body){--wp--style--root--padding-top: 10px;--wp--style--root--padding-right: 12px;--wp--style--root--padding-bottom: 10px;--wp--style--root--padding-left: 12px;}';
+		$expected    = ':where(body) { margin: 0; }.wp-site-blocks { padding-top: var(--wp--style--root--padding-top); padding-bottom: var(--wp--style--root--padding-bottom); }.has-global-padding { padding-right: var(--wp--style--root--padding-right); padding-left: var(--wp--style--root--padding-left); }.has-global-padding > .alignfull { margin-right: calc(var(--wp--style--root--padding-right) * -1); margin-left: calc(var(--wp--style--root--padding-left) * -1); }.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) { padding-right: 0; padding-left: 0; }.has-global-padding :where(:not(.alignfull.is-layout-flow) > .has-global-padding:not(.wp-block-block, .alignfull)) > .alignfull { margin-left: 0; margin-right: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}body{--wp--style--root--padding-top: 10px;--wp--style--root--padding-right: 12px;--wp--style--root--padding-bottom: 10px;--wp--style--root--padding-left: 12px;}';
 		$root_rules  = $theme_json->get_root_layout_rules( WP_Theme_JSON::ROOT_BLOCK_SELECTOR, $metadata );
 		$style_rules = $theme_json->get_styles_for_block( $metadata );
 		$this->assertSame( $expected, $root_rules . $style_rules );
@@ -3763,6 +3770,7 @@ public function test_get_styles_for_block_with_padding_aware_alignments() {
 	 * @ticket 58550
 	 * @ticket 60936
 	 * @ticket 61165
+	 * @ticket 61704
 	 */
 	public function test_get_styles_for_block_without_padding_aware_alignments() {
 		$theme_json = new WP_Theme_JSON(
@@ -3786,7 +3794,7 @@ public function test_get_styles_for_block_without_padding_aware_alignments() {
 			'selector' => 'body',
 		);
 
-		$expected    = ':where(body) { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:root :where(body){padding-top: 10px;padding-right: 12px;padding-bottom: 10px;padding-left: 12px;}';
+		$expected    = ':where(body) { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}.is-layout-flow > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-flow > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-flow > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > .alignleft{float: left;margin-inline-start: 0;margin-inline-end: 2em;}.is-layout-constrained > .alignright{float: right;margin-inline-start: 2em;margin-inline-end: 0;}.is-layout-constrained > .aligncenter{margin-left: auto !important;margin-right: auto !important;}.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)){margin-left: auto !important;margin-right: auto !important;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}body{padding-top: 10px;padding-right: 12px;padding-bottom: 10px;padding-left: 12px;}';
 		$root_rules  = $theme_json->get_root_layout_rules( WP_Theme_JSON::ROOT_BLOCK_SELECTOR, $metadata );
 		$style_rules = $theme_json->get_styles_for_block( $metadata );
 		$this->assertSame( $expected, $root_rules . $style_rules );
@@ -4998,6 +5006,7 @@ public function test_get_shadow_styles_for_blocks() {
 	 * @ticket 61123
 	 * @ticket 61165
 	 * @ticket 61720
+	 * @ticket 61704
 	 */
 	public function test_get_top_level_background_image_styles() {
 		$theme_json = new WP_Theme_JSON(
@@ -5022,7 +5031,7 @@ public function test_get_top_level_background_image_styles() {
 			'selector' => 'body',
 		);
 
-		$expected_styles = "html{min-height: calc(100% - var(--wp-admin--admin-bar--height, 0px));}:root :where(body){background-image: url('http://example.org/image.png');background-position: center center;background-repeat: no-repeat;background-size: contain;background-attachment: fixed;}";
+		$expected_styles = "html{min-height: calc(100% - var(--wp-admin--admin-bar--height, 0px));}body{background-image: url('http://example.org/image.png');background-position: center center;background-repeat: no-repeat;background-size: contain;background-attachment: fixed;}";
 		$this->assertSame( $expected_styles, $theme_json->get_styles_for_block( $body_node ), 'Styles returned from "::get_stylesheet()" with top-level background styles type do not match expectations' );
 
 		$theme_json = new WP_Theme_JSON(
@@ -5040,6 +5049,7 @@ public function test_get_top_level_background_image_styles() {
 			)
 		);
 
+		$expected_styles = "html{min-height: calc(100% - var(--wp-admin--admin-bar--height, 0px));}body{background-image: url('http://example.org/image.png');background-position: center center;background-repeat: no-repeat;background-size: contain;background-attachment: fixed;}";
 		$this->assertSame( $expected_styles, $theme_json->get_styles_for_block( $body_node ), 'Styles returned from "::get_stylesheet()" with top-level background image as string type do not match expectations' );
 	}