<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g> <path fill="none" d="M0 0h24v24H0z"/> <path fill-rule="nonzero" d="M21 3a1 1 0 0 1 1 1v16a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h18zM4 10v9h16v-9H4zm0-2h16V5H4v3z"/> </g> </svg>