<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g> <path fill="none" d="M0 0h24v24H0z"/> <path d="M21 3a1 1 0 0 1 1 1v16a1 1 0 0 1-1 1h-4V3h4zm-6 18H3a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h12v18z"/> </g> </svg>
