现有小部件的代码：

$get_featured_pages = new WP_Query( array(
        \'posts_per_page\'            => -1,
        \'post_type\'                 =>  array( \'page\' ),
        \'post__in\'                  => $page_array,
        \'orderby\'                   => \'post__in\'
    ) );
    echo $before_widget; ?>
        <div class="services-block clearfix">
            <?php
            $j = 1;
            while( $get_featured_pages->have_posts() ):$get_featured_pages->the_post();
                $page_title = get_the_title();
                if( $j == 3 ) {
                    $service_class = "tg-one-third tg-one-third-last";
                }
                else {
                    $service_class = "tg-one-third";
                }
                ?>
                <div class="<?php echo $service_class; ?>">

当前输出所有divclass="tg-one-third" 还有一个tg-one-third-last. 我需要针对他们单独添加图标样式。我已经搜索过了，但很难找到使用上述语法的答案。

else {
    $service_class = "tg-one-third tg-item-" . $j;
}