@media (min-width: 601px) {

    .viewport {
	position: fixed;
	top: 0;
	right: 0;
	height: 100vh;
	width: 50vw;
    }
}

@media (max-width: 600px) {

  .viewport {
      position: relative;
      bottom: 0;
      left: 0;
      height: auto;
      width: 100vw;
  }
}