<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
    <path d="M0 0h48v48h-48z" fill="none"/>
    <path d="M36 8h-24c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h24c2.21 0 4-1.79 4-4v-24c0-2.21-1.79-4-4-4zm0 28h-24v-24h24v24z"/>
</svg>