<svg width="24" height="19" viewBox="0 0 24 19" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M21.75 0.5H2.25C0.984375 0.5 0 1.53125 0 2.75V16.25C0 17.5156 0.984375 18.5 2.25 18.5H21.75C22.9688 18.5 24 17.5156 24 16.25V2.75C24 1.53125 22.9688 0.5 21.75 0.5ZM21.75 2.75V4.67188C20.6719 5.5625 18.9844 6.875 15.4219 9.6875C14.625 10.2969 13.0781 11.7969 12 11.75C10.875 11.7969 9.32812 10.2969 8.53125 9.6875C4.96875 6.875 3.28125 5.5625 2.25 4.67188V2.75H21.75ZM2.25 16.25V7.57812C3.28125 8.42188 4.82812 9.64062 7.125 11.4688C8.15625 12.2656 9.98438 14.0469 12 14C13.9688 14.0469 15.75 12.2656 16.8281 11.4688C19.125 9.64062 20.6719 8.42188 21.75 7.57812V16.25H2.25Z" fill="#777777"/>
</svg>