<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M432 32H16A16 16 0 0 0 0 48v416a16 16 0 0 0 16 16h416a16 16 0 0 0 16-16V48a16 16 0 0 0-16-16zM32 64h176v176H32zm0 384V272h176v176zm384 0H240V272h176zm0-208H240V64h176z"/></svg>
info at phpclasses dot org