private function addBranding(): string
    {
        $output = '<a class="navbar-brand" href="' . BASE_URL . '/">';
        if ($this->options['brand']['image']['link'] !== 'none') $output .= '<img src="' . BASE_URL . $this->options['brand']['image']['link'] . '" height="' . $this->options['brand']['image']['size'] . '" alt="Logo Website">';
        $style = '';
        if (!empty($this->options['brand']['style'])) {
            foreach ($this->options['brand']['style'] as $key => $value) {
                $key = strtolower($key);
                if (is_string($value)) $value = strtolower($value);
                $style .= $key . ':' . $value . ';';
            }
        }
        $output .= '<span style="' . $style . '">' . $this->options['brand']['name'] . '</span></a>';
        return $output;
    }