body {
    overflow: hidden;
}

main div {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 100%;
}

main div img {
  width: 100%;
  height: auto;
}

@media screen and (min-width: 800px) {
	main div {
		width: initial;
	}
	
	main div img {
	  width: 800px;
	}
}