system-uicons/src/images/icons/arrow_down.svg

<svg height="21" viewBox="0 0 21 21" width="21" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" transform="translate(6 4)"><path d="m.5 9.499 4 4.001 4-4.001"/><path d="m4.5.5v13" transform="matrix(-1 0 0 -1 9 14)"/></g></svg>