<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
    <path d="M6 36h12v-4h-12v4zm0-24v4h36v-4h-36zm0 14h24v-4h-24v4z"/>
    <path d="M0 0h48v48h-48z" fill="none"/>
</svg>