Builder: Add custom CSS class names to Builder modules

builder_custom_module_css_class.php

<?php

// Custom Builder module CSS classes for styling
if ( ! function_exists( 'it_builder_loaded' ) ) {
    add_action( 'it_libraries_loaded', 'it_builder_loaded' );
    function it_builder_loaded() {
		builder_register_module_style( array('html','widget-bar','content'), 'Sample Style Name', 'sample-style-class' );
	}
}

?>