public function render ()
    {
        $short    = !empty($this->detailed) ? "<p><strong>{$this->short}</strong></p>" : "<p>{$this->short}</p>";
        $detailed = !empty($this->detailed) ? "<p>{$this->detailed}</p>" : "";
        $classes  = implode(' ', $this->getClasses());
        return '<div class="' . $classes . '">' . $short . $detailed . '</div>';
    }