public static function progress($message = 'Loading. Please wait ...', $percentage = 100, $style = 'info', $striped = true, $active = true) {
        ob_start();
        ?>
        <div class="progress <?= ($striped) ? 'progress-striped' : '' ?> progress-<?= $style ?> <?= ($striped) ? 'active' : '' ?>">
            <div class="bar" style="width:<?= $percentage ?>%"><?= $message ?></div>
        </div>
        <?php
        return ob_get_clean();
    }