public function jumbotron()
    {
        return _class('html')->jumbotron([
            'head' => 'My big header',
            'body' => '<p>This is a simple hero unit, a simple jumbotron-style component for calling extra attention to featured content or information.</p>
				<p><a class="btn btn-primary btn-lg" role="button">Learn more</a></p>',
        ]);
    }

    public function jumbotron($data = [], $extra = [])
    {
        if ($this->_is_bs5) {
            return $this->_bs5()->jumbotron($data, $extra);
        }
        $extra['id'] = ($extra['id'] ?? null) ?: __FUNCTION__ . '_' . ($this->_ids[__FUNCTION__] = ($this->_ids[__FUNCTION__] ?? 0) + 1);
        return '<div class="jumbotron' . (($extra['class'] ?? null) ? ' ' . ($extra['class'] ?? null) : '') . '" id="' . ($extra['id'] ?? null) . '"><h1>' . ($data['head'] ?? null) . '</h1>' . ($data['body'] ?? null) . '</div>';
    }