icons/regular/fast-arrow-down-square.svg

<svg width="24" height="24" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M3 20.4V3.6C3 3.26863 3.26863 3 3.6 3H20.4C20.7314 3 21 3.26863 21 3.6V20.4C21 20.7314 20.7314 21 20.4 21H3.6C3.26863 21 3 20.7314 3 20.4Z" stroke="currentColor" stroke-width="1.5"/>
<path d="M15.5 7.5L12 11L8.5 7.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M15.5 13.5L12 17L8.5 13.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>