diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d59ffb260..c59a882fb 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -33,7 +33,7 @@ jobs:
       WORDPRESS_DB_SQL_DUMP_FILE: tests/Support/Data/dump.sql # Used to populate the test site database for WordPress 6.2.8
       INSTALL_PLUGINS: "admin-menu-editor autoptimize beaver-builder-lite-version block-visibility contact-form-7 classic-editor custom-post-type-ui debloat elementor forminator jetpack-boost mailchimp-for-wp rocket-lazy-load woocommerce wordpress-seo wpforms-lite litespeed-cache wp-crontrol wp-super-cache w3-total-cache wp-fastest-cache wp-optimize sg-cachepress" # Don't include this repository's Plugin here.
       INSTALL_PLUGINS_URLS: "https://downloads.wordpress.org/plugin/convertkit-for-woocommerce.1.6.4.zip http://cktestplugins.wpengine.com/wp-content/uploads/2024/01/convertkit-action-filter-tests.zip http://cktestplugins.wpengine.com/wp-content/uploads/2024/11/disable-doing-it-wrong-notices.zip http://cktestplugins.wpengine.com/wp-content/uploads/2025/03/uncode-js_composer.7.8.zip http://cktestplugins.wpengine.com/wp-content/uploads/2025/03/uncode-core.zip" # URLs to specific third party Plugins
-      INSTALL_THEMES_URLS: "http://cktestplugins.wpengine.com/wp-content/uploads/2025/03/uncode.zip http://cktestplugins.wpengine.com/wp-content/uploads/2025/04/Divi.zip"
+      INSTALL_THEMES_URLS: "http://cktestplugins.wpengine.com/wp-content/uploads/2025/03/uncode.zip http://cktestplugins.wpengine.com/wp-content/uploads/2025/04/Divi.zip http://cktestplugins.wpengine.com/wp-content/uploads/2026/01/impeka.zip"
       CONVERTKIT_API_KEY: ${{ secrets.CONVERTKIT_API_KEY }} # ConvertKit API Key, stored in the repository's Settings > Secrets
       CONVERTKIT_API_SECRET: ${{ secrets.CONVERTKIT_API_SECRET }} # ConvertKit API Secret, stored in the repository's Settings > Secrets
       CONVERTKIT_API_KEY_NO_DATA: ${{ secrets.CONVERTKIT_API_KEY_NO_DATA }} # ConvertKit API Key for ConvertKit account with no data, stored in the repository's Settings > Secrets
diff --git a/includes/class-convertkit-output-restrict-content.php b/includes/class-convertkit-output-restrict-content.php
index ac940b381..17e97b822 100644
--- a/includes/class-convertkit-output-restrict-content.php
+++ b/includes/class-convertkit-output-restrict-content.php
@@ -1227,21 +1227,24 @@ private function restrict_content( $content ) {
 		$call_to_action = apply_filters( 'convertkit_output_restrict_content_call_to_action', $call_to_action, $this->post_id );
 
 		// Fetch container CSS classes.
-		$container_css_classes = $this->restrict_content_settings->get_by_key( 'container_css_classes' );
+		$container_css_classes = explode( ' ', $this->restrict_content_settings->get_by_key( 'container_css_classes' ) );
 
 		/**
 		 * Define the container CSS classes to wrap the content preview and call to action within.
 		 *
 		 * @since   3.1.4
 		 *
-		 * @param   string  $container_css_classes    Container CSS classes.
-		 * @param   int     $post_id            Post ID.
+		 * @param   array  $container_css_classes    Container CSS classes.
+		 * @param   int    $post_id                  Post ID.
 		 */
 		$container_css_classes = apply_filters( 'convertkit_output_restrict_content_container_css_classes', $container_css_classes, $this->post_id );
 
+		// Remove empty CSS classes.
+		$container_css_classes = array_filter( $container_css_classes );
+
 		// If container CSS classes are set, return the content preview and call to action wrapped in the container.
-		if ( $container_css_classes ) {
-			return '<div class="' . sanitize_html_class( $container_css_classes ) . '">' . $content_preview . $call_to_action . '</div>';
+		if ( count( $container_css_classes ) ) {
+			return '<div class="' . trim( implode( ' ', map_deep( $container_css_classes, 'sanitize_html_class' ) ) ) . '">' . $content_preview . $call_to_action . '</div>';
 		}
 
 		// Return the content preview and its call to action.
diff --git a/includes/functions.php b/includes/functions.php
index 038248f23..6ad62e1e0 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -641,6 +641,32 @@ function convertkit_output_intercom_messenger() {
 
 }
 
+/**
+ * Checks if the given Theme is active.
+ *
+ * @since  3.1.4
+ *
+ * @param   string $theme_name   Theme name.
+ * @return  bool
+ */
+function convertkit_is_theme_active( $theme_name ) {
+
+	// Assume Theme isn't active if we can't detect it.
+	if ( ! function_exists( 'wp_get_theme' ) ) {
+		return false;
+	}
+
+	// Check the Parent Theme if we're on a Child Theme.
+	if ( wp_get_theme()->parent() ) {
+		$theme = wp_get_theme()->parent();
+	} else {
+		$theme = wp_get_theme();
+	}
+
+	return strtolower( $theme->get( 'Name' ) ) === strtolower( $theme_name );
+
+}
+
 /**
  * Returns permitted HTML output when using wp_kses( ..., convertkit_kses_allowed_html()).
  *
diff --git a/includes/integrations/class-convertkit-impeka.php b/includes/integrations/class-convertkit-impeka.php
new file mode 100644
index 000000000..42432c16c
--- /dev/null
+++ b/includes/integrations/class-convertkit-impeka.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * ConvertKit Impeka Theme Integration.
+ *
+ * @package ConvertKit
+ * @author ConvertKit
+ */
+
+/**
+ * Adds compatibility with the Impeka theme by adding a CSS class
+ * to the Restrict Content container if the Impeka theme is active.
+ *
+ * @since   3.1.4
+ */
+class ConvertKit_Impeka {
+
+	/**
+	 * Constructor.
+	 *
+	 * @since   3.1.4
+	 */
+	public function __construct() {
+
+		add_filter( 'convertkit_output_restrict_content_container_css_classes', array( $this, 'maybe_add_restrict_content_container_css_classes' ) );
+
+	}
+
+	/**
+	 * Adds a CSS class to the Restrict Content container if the Impeka theme is active.
+	 *
+	 * @since   3.1.4
+	 *
+	 * @param   array $css_classes    CSS classes for Restrict Content container.
+	 * @return  array
+	 */
+	public function maybe_add_restrict_content_container_css_classes( $css_classes ) {
+
+		// Don't add a CSS class if the Impeka theme is not active.
+		if ( ! convertkit_is_theme_active( 'Impeka' ) ) {
+			return $css_classes;
+		}
+
+		$css_classes[] = 'grve-container';
+		return $css_classes;
+
+	}
+
+}
+
+new ConvertKit_Impeka();
diff --git a/tests/EndToEnd/restrict-content/post-types/RestrictContentProductThirdPartyThemeOrPageBuilderCest.php b/tests/EndToEnd/restrict-content/post-types/RestrictContentProductThirdPartyThemeOrPageBuilderCest.php
index 82d82d808..800cc3454 100644
--- a/tests/EndToEnd/restrict-content/post-types/RestrictContentProductThirdPartyThemeOrPageBuilderCest.php
+++ b/tests/EndToEnd/restrict-content/post-types/RestrictContentProductThirdPartyThemeOrPageBuilderCest.php
@@ -31,6 +31,55 @@ public function _before(EndToEndTester $I)
 		$I->setupKitPluginResources($I);
 	}
 
+	/**
+	 * Test that restricting content by a Product specified in the Page Settings works when
+	 * creating and viewing a new WordPress Page using the Impeka theme automatically
+	 * adds Impeka's grve-container CSS class to the Restrict Content container,
+	 * ensuring correct layout.
+	 *
+	 * @since   3.1.4
+	 *
+	 * @param   EndToEndTester $I  Tester.
+	 */
+	public function testRestrictContentByProductWithImpekaTheme(EndToEndTester $I)
+	{
+		// Activate theme.
+		$I->useTheme('impeka');
+
+		// Programmatically create a Page using the Visual Composer Page Builder.
+		$pageID = $I->havePostInDatabase(
+			[
+				'post_type'    => 'page',
+				'post_title'   => 'Kit: Page: Restrict Content: Product: Impeka Theme with Visual Composer',
+				'post_content' => 'Member-only content.',
+
+				// Don't display a Form on this Page, so we test against Restrict Content's Form.
+				'meta_input'   => [
+					'_wp_convertkit_post_meta' => [
+						'form'             => '0',
+						'landing_page'     => '',
+						'tag'              => '',
+						'restrict_content' => 'product_' . $_ENV['CONVERTKIT_API_PRODUCT_ID'],
+					],
+				],
+			]
+		);
+
+		// Test Restrict Content functionality.
+		$I->testRestrictedContentByProductOnFrontend(
+			$I,
+			urlOrPageID: $pageID,
+			options: [
+				'visible_content' => '',
+				'member_content'  => 'Member-only content.',
+				'settings'        => [
+					// Test that the grve-container CSS class is added to the Restrict Content container.
+					'container_css_classes' => 'grve-container',
+				],
+			],
+		);
+	}
+
 	/**
 	 * Test that restricting content by a Product specified in the Page Settings works when
 	 * creating and viewing a new WordPress Page using the Uncode theme both using
diff --git a/tests/Integration/ThemeDetectionTest.php b/tests/Integration/ThemeDetectionTest.php
new file mode 100644
index 000000000..cf0f50613
--- /dev/null
+++ b/tests/Integration/ThemeDetectionTest.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace Tests;
+
+use lucatume\WPBrowser\TestCase\WPTestCase;
+
+/**
+ * Tests for the convertkit_is_theme_active() function.
+ *
+ * @since   3.1.4
+ */
+class ThemeDetectionTest extends WPTestCase
+{
+	/**
+	 * The testing implementation.
+	 *
+	 * @var \WpunitTester.
+	 */
+	protected $tester;
+
+	/**
+	 * Performs actions before each test.
+	 *
+	 * @since   3.1.4
+	 */
+	public function setUp(): void
+	{
+		parent::setUp();
+
+		// Activate Plugin.
+		activate_plugins('convertkit/wp-convertkit.php');
+	}
+
+	/**
+	 * Performs actions after each test.
+	 *
+	 * @since   3.1.4
+	 */
+	public function tearDown(): void
+	{
+		// Deactivate Plugin.
+		deactivate_plugins('convertkit/wp-convertkit.php');
+
+		parent::tearDown();
+	}
+
+	/**
+	 * Test that the convertkit_is_theme_active() function returns the expected result
+	 * depending on the active theme.
+	 *
+	 * @since   3.1.4
+	 */
+	public function testIsThemeActive()
+	{
+		// Switch Theme.
+		switch_theme('twentytwentyfive');
+		$this->assertTrue(convertkit_is_theme_active( 'Twenty Twenty-Five' ));
+		$this->assertFalse(convertkit_is_theme_active( 'Impeka' ));
+
+		// Switch Theme.
+		switch_theme('impeka');
+		$this->assertFalse(convertkit_is_theme_active( 'Twenty Twenty-Five' ));
+		$this->assertTrue(convertkit_is_theme_active( 'Impeka' ));
+	}
+}
diff --git a/wp-convertkit.php b/wp-convertkit.php
index 3e15d62fd..4641bce42 100644
--- a/wp-convertkit.php
+++ b/wp-convertkit.php
@@ -145,6 +145,9 @@
 require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/forminator/class-convertkit-forminator.php';
 require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/forminator/class-convertkit-forminator-settings.php';
 
+// Impeka Integration.
+require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/class-convertkit-impeka.php';
+
 // Uncode Integration.
 require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/class-convertkit-uncode.php';