diff --git a/plugins/hwp-previews/assets/css/hwp-previews.css b/plugins/hwp-previews/assets/css/hwp-previews.css
index 0fbb51b7..54ecdca3 100644
--- a/plugins/hwp-previews/assets/css/hwp-previews.css
+++ b/plugins/hwp-previews/assets/css/hwp-previews.css
@@ -1,3 +1,9 @@
+.settings_page_hwp-previews #poststuff .postbox .inside h2 {
+	font-size: 1.3em;
+	font-weight: 600;
+	padding-left: 0;
+}
+
 .hwp-previews-tag-cloud {
 	display: flex;
 	flex-wrap: wrap;
diff --git a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Abstract_Settings_Field.php b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Abstract_Settings_Field.php
index a594eeb1..d8744b17 100644
--- a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Abstract_Settings_Field.php
+++ b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Abstract_Settings_Field.php
@@ -124,12 +124,14 @@ public function settings_field_callback( array $args ): void {
 		$settings_key = $args['settings_key'] ?? HWP_PREVIEWS_SETTINGS_KEY;
 
 		printf(
-			'<div tabindex="0" aria-describedby="%2$s-tooltip" class="hwp-previews-tooltip">
+			'<span class="hwp-previews-tooltip">
 				<span class="dashicons dashicons-editor-help"></span>
-				<span id="%2$s-tooltip" class="tooltip-text description">%1$s</span>
-			</div>',
+				<span id="%2$s-%3$s-%4$s-tooltip" class="tooltip-text description">%1$s</span>
+			</span>',
 			esc_attr( $this->get_description() ),
-			esc_attr( $settings_key )
+			esc_attr( $settings_key ),
+			esc_attr( $post_type ),
+			esc_attr( $this->id ),
 		);
 
 		// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
diff --git a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Checkbox_Field.php b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Checkbox_Field.php
index a2705d2a..f73484ce 100644
--- a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Checkbox_Field.php
+++ b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Checkbox_Field.php
@@ -41,7 +41,7 @@ public function render_field( $option_value, $setting_key, $post_type ): string
 			: $this->default;
 
 		return sprintf(
-			'<input type="checkbox" name="%1$s[%2$s][%3$s]" value="1" %4$s class="%5$s" />',
+			'<input type="checkbox" name="%1$s[%2$s][%3$s]" aria-labelledby="%1$s-%2$s-%3$s-tooltip" value="1" %4$s class="%5$s" />',
 			esc_attr( $setting_key ),
 			esc_attr( $post_type ),
 			esc_attr( $this->id ),
diff --git a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Text_Input_Field.php b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Text_Input_Field.php
index c4ec3ca7..8d781e2b 100644
--- a/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Text_Input_Field.php
+++ b/plugins/hwp-previews/src/Admin/Settings/Fields/Field/Text_Input_Field.php
@@ -53,7 +53,7 @@ public function render_field( array $option_value, string $setting_key, string $
 
 
 		return sprintf(
-			'<input type="%1$s" name="%2$s[%3$s][%4$s]" value="%5$s" placeholder="%6$s" class="%7$s" />',
+			'<input type="%1$s" name="%2$s[%3$s][%4$s]" aria-labelledby="%2$s-%3$s-%4$s-tooltip" value="%5$s" placeholder="%6$s" class="%7$s" />',
 			$this->get_input_type(),
 			esc_attr( $setting_key ),
 			esc_attr( $post_type ),
diff --git a/plugins/hwp-previews/src/Admin/Settings/Templates/settings-page-main.php b/plugins/hwp-previews/src/Admin/Settings/Templates/settings-page-main.php
index fbf8a2e8..f190b7bc 100644
--- a/plugins/hwp-previews/src/Admin/Settings/Templates/settings-page-main.php
+++ b/plugins/hwp-previews/src/Admin/Settings/Templates/settings-page-main.php
@@ -14,7 +14,7 @@
 <div class="wrap">
 	<h1><?php esc_html_e( 'HWP Previews Settings', 'hwp-previews' ); ?></h1>
 	<form method="post" action="options.php">
-		<h2 class="nav-tab-wrapper">
+		<nav class="nav-tab-wrapper">
 			<?php
 			foreach ( $hwp_previews_tabs as $hwp_previews_tab_key => $hwp_previews_tab_label ) {
 				$hwp_previews_tab_url   = admin_url( 'admin.php?page=hwp-previews&tab=' . $hwp_previews_tab_key );
@@ -22,7 +22,7 @@
 				echo '<a href="' . esc_url( $hwp_previews_tab_url ) . '" class="' . esc_attr( $hwp_previews_tab_class ) . '">' . esc_html( $hwp_previews_tab_label ) . '</a>';
 			}
 			?>
-		</h2>
+		</nav>
 
 		<div id="poststuff">
 			<div id="post-body" class="metabox-holder columns-2">
@@ -45,7 +45,7 @@
 				<div id="postbox-container-1" class="postbox-container">
 					<div class="meta-box-sortables">
 						<div class="postbox">
-							<h2><?php esc_html_e( 'Available Preview URL Parameters', 'hwp-previews' ); ?></h2>
+							<h3><?php esc_html_e( 'Available Preview URL Parameters', 'hwp-previews' ); ?></h3>
 							<div class="inside">
 								<div class="hwp-previews-tag-cloud">
 									<?php foreach ( $hwp_previews_params as $hwp_previews_param_name => $hwp_previews_param_desc ) : ?>
@@ -59,7 +59,7 @@
 						</div>
 
 						<div class="postbox">
-							<h2><?php esc_html_e( 'Get Started With HWP Previews', 'hwp-previews' ); ?></h2>
+							<h3><?php esc_html_e( 'Get Started With HWP Previews', 'hwp-previews' ); ?></h3>
 							<div class="inside hwp-previews-docs">
 			
 								<ul>
diff --git a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/CheckboxFieldTest.php b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/CheckboxFieldTest.php
index f6ad46b6..60abb4d9 100644
--- a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/CheckboxFieldTest.php
+++ b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/CheckboxFieldTest.php
@@ -65,8 +65,9 @@ public function test_render_field_checked(): void {
 		$post_type = 'post';
 
 		$expected_input_name = 'hwp_previews_settings[' . $post_type . '][in_iframe]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-in_iframe-tooltip';
 		$expected_css_class = 'custom-css-class';
-		$expected_output = '<input type="checkbox" name="' . $expected_input_name . '" value="1"  checked=\'checked\' class="' . $expected_css_class . '" />';
+		$expected_output = '<input type="checkbox" name="' . $expected_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="1"  checked=\'checked\' class="' . $expected_css_class . '" />';
 
 		$rendered_output = $field->render_field($option_value, $setting_key, $post_type);
 
@@ -80,8 +81,9 @@ public function test_render_field_unchecked(): void {
 		$post_type = 'post';
 
 		$expected_input_name = 'hwp_previews_settings[' . $post_type . '][in_iframe]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-in_iframe-tooltip';
 		$expected_css_class = 'custom-css-class';
-		$expected_output = '<input type="checkbox" name="' . $expected_input_name . '" value="1"  class="' . $expected_css_class . '" />';
+		$expected_output = '<input type="checkbox" name="' . $expected_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="1"  class="' . $expected_css_class . '" />';
 
 		$rendered_output = $field->render_field($option_value, $setting_key, $post_type);
 
@@ -99,7 +101,7 @@ public function test_render_field_without_css_class(): void {
 		$rendered_output = $field->render_field([], HWP_PREVIEWS_SETTINGS_KEY, 'page');
 
 		$this->assertEquals(
-			'<input type="checkbox" name="hwp_previews_settings[page][in_iframe]" value="1"  class="" />',
+			'<input type="checkbox" name="hwp_previews_settings[page][in_iframe]" aria-labelledby="hwp_previews_settings-page-in_iframe-tooltip" value="1"  class="" />',
 			$rendered_output
 		);
 	}
diff --git a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextInputFieldTest.php b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextInputFieldTest.php
index ebba02cd..cb4baad0 100644
--- a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextInputFieldTest.php
+++ b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextInputFieldTest.php
@@ -89,10 +89,11 @@ public function test_render_field_with_default_value() {
 
 		$rendered_output      = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name  = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$excepted_input_value = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class   = 'custom-css-class';
 
-		$expected_output      = '<input type="text" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output      = '<input type="text" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -105,9 +106,10 @@ public function test_render_field_with_no_option_value() {
 
 		$rendered_output      = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name  = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$excepted_input_value = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class   = 'custom-css-class';
-		$expected_output      = '<input type="text" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output      = '<input type="text" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -123,9 +125,10 @@ public function test_render_field_with_different_option_value_to_default_value()
 
 		$rendered_output     = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$default_value       = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class  = 'custom-css-class';
-		$expected_output     = '<input type="text" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $default_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output     = '<input type="text" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $default_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -141,7 +144,7 @@ public function test_render_field_without_css_class() {
 		$rendered_output = $field->render_field( [], HWP_PREVIEWS_SETTINGS_KEY, 'page' );
 
 		$this->assertEquals(
-			'<input type="text" name="hwp_previews_settings[page][preview_url]" value="" placeholder="" class="" />',
+			'<input type="text" name="hwp_previews_settings[page][preview_url]" aria-labelledby="hwp_previews_settings-page-preview_url-tooltip" value="" placeholder="" class="" />',
 			$rendered_output
 		);
 	}
diff --git a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextURLFieldTest.php b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextURLFieldTest.php
index fa28133c..e2aae306 100644
--- a/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextURLFieldTest.php
+++ b/plugins/hwp-previews/tests/wpunit/Admin/Settings/Fields/Field/TextURLFieldTest.php
@@ -91,9 +91,10 @@ public function test_render_field_with_default_value() {
 
 		$rendered_output      = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name  = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$excepted_input_value = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class   = 'custom-css-class';
-		$expected_output      = '<input type="url" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output      = '<input type="url" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -106,9 +107,10 @@ public function test_render_field_with_no_option_value() {
 
 		$rendered_output      = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name  = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$excepted_input_value = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class   = 'custom-css-class';
-		$expected_output      = '<input type="url" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output      = '<input type="url" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $excepted_input_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -124,9 +126,10 @@ public function test_render_field_with_different_option_value_to_default_value()
 
 		$rendered_output     = $field->render_field( $option_value, $setting_key, $post_type );
 		$excepted_input_name = 'hwp_previews_settings[' . $post_type . '][preview_url]';
+		$expceted_input_label = 'hwp_previews_settings-' . $post_type . '-preview_url-tooltip';
 		$default_value       = 'https://example.com/' . $post_type . '?preview=true&amp;post_id={ID}&amp;name={slug}';
 		$excepted_css_class  = 'custom-css-class';
-		$expected_output     = '<input type="url" name="' . $excepted_input_name . '" value="' . $excepted_input_value . '" placeholder="' . $default_value . '" class="' . $excepted_css_class . '" />';
+		$expected_output     = '<input type="url" name="' . $excepted_input_name . '" aria-labelledby="' . $expceted_input_label . '" value="' . $excepted_input_value . '" placeholder="' . $default_value . '" class="' . $excepted_css_class . '" />';
 
 		$this->assertEquals( $expected_output, $rendered_output );
 	}
@@ -142,7 +145,7 @@ public function test_render_field_without_css_class() {
 		$rendered_output = $field->render_field( [], HWP_PREVIEWS_SETTINGS_KEY, 'page' );
 
 		$this->assertEquals(
-			'<input type="url" name="hwp_previews_settings[page][preview_url]" value="" placeholder="" class="" />',
+			'<input type="url" name="hwp_previews_settings[page][preview_url]" aria-labelledby="hwp_previews_settings-page-preview_url-tooltip" value="" placeholder="" class="" />',
 			$rendered_output
 		);
 	}