body, html {
	height: 100%;
	width: 100%;
	overflow: hidden;
	background: #f3f2f2;
	text-align: center;
}

.subject {
	margin-top: 1.5rem;
	font-size: 1.3rem;
}

.preview {
	margin-top: 3rem;
	text-align: center;
	position: relative;
}

.top-img {
	width: 16rem;
}

.bottom-img {
	position: absolute;
	bottom: 0;
	left: 50%;
	-webkit-transform: translateX(-50%);
	transform: translateX(-50%);
	width: 90%;
}