Services loop

function create_service()
{

	$labels = array(
		'name' => _x('Service', 'Post Type General Name', 'textdomain'),
		'singular_name' => _x('Service ', 'Post Type Singular Name', 'textdomain'),
		'menu_name' => _x('Service', 'Admin Menu text', 'textdomain'),
		'name_admin_bar' => _x('Service ', 'Add New on Toolbar', 'textdomain'),
		'archives' => __('Service  Archives', 'textdomain'),
		'attributes' => __('Service  Attributes', 'textdomain'),
		'parent_item_colon' => __('Parent Service :', 'textdomain'),
		'all_items' => __('All Service', 'textdomain'),
		'add_new_item' => __('Add New Service ', 'textdomain'),
		'add_new' => __('Add New', 'textdomain'),
		'new_item' => __('New Service ', 'textdomain'),
		'edit_item' => __('Edit Service ', 'textdomain'),
		'update_item' => __('Update Service ', 'textdomain'),
		'view_item' => __('View Service ', 'textdomain'),
		'view_items' => __('View Service', 'textdomain'),
		'search_items' => __('Search Service ', 'textdomain'),
		'not_found' => __('Not found', 'textdomain'),
		'not_found_in_trash' => __('Not found in Trash', 'textdomain'),
		'featured_image' => __('Featured Image', 'textdomain'),
		'set_featured_image' => __('Set featured image', 'textdomain'),
		'remove_featured_image' => __('Remove featured image', 'textdomain'),
		'use_featured_image' => __('Use as featured image', 'textdomain'),
		'insert_into_item' => __('Insert into Service ', 'textdomain'),
		'uploaded_to_this_item' => __('Uploaded to this Service ', 'textdomain'),
		'items_list' => __('Service list', 'textdomain'),
		'items_list_navigation' => __('Service list navigation', 'textdomain'),
		'filter_items_list' => __('Filter Service list', 'textdomain'),
	);
	$rewrite = array(
		'slug' => 'service',
		'with_front' => true,
		'pages' => true,
		'feeds' => true,
	);
	$args = array(
		'label' => __('Service ', 'textdomain'),
		'description' => __('', 'textdomain'),
		'labels' => $labels,
		'menu_icon' => 'dashicons-admin-appearance',
		'supports' => array('title', 'editor', 'excerpt', 'thumbnail', 'page-attributes', 'post-formats', 'custom-fields'),
		'taxonomies' => array(),
		'public' => true,
		'show_ui' => true,
		'show_in_menu' => true,
		'menu_position' => 5,
		'show_in_admin_bar' => true,
		'show_in_nav_menus' => true,
		'can_export' => true,
		'has_archive' => true,
		'hierarchical' => true,
		'exclude_from_search' => true,
		'show_in_rest' => true,
		'publicly_queryable' => true,
		'capability_type' => 'post',
		'rewrite' => $rewrite,
	);
	register_post_type('service', $args);
	register_taxonomy('service_category', 'service', array('hierarchical' => true, 'label' => 'Category', 'query_var' => true, 'rewrite' => array('slug' => 'service-category')));
}
add_action('init', 'create_service', 0);

function service_loop()
{
	$arg = array(
		'post_type' => 'service',
		'posts_per_page' => -1,
		);
        $servicePost = new WP_Query($arg);
	?>
	<div id="mainService">
	<?php if ($servicePost->have_posts()) : ?>
			<?php while ($servicePost->have_posts()) : ?>
			<?php $servicePost->the_post(); 
				$content= get_the_content();
			?>
			<div class="single-service">
				<?php the_post_thumbnail( 'full', array( 'class' => 'service' ) ); ?>
				<div class="contentArea">
					<h2><?php the_title(); ?></h2>
					<p><?php echo substr($content, 0, 180); ?>
				</div>	
			</div>
			<?php endwhile; ?>
            <?php endif; ?>
</div>
<?php
	wp_reset_postdata();

}
add_shortcode('mainService', 'service_loop');