body {
	background-attachment: fixed !important;
	background-image: linear-gradient(90deg, #ffffff, #3780b0);
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translateX(-50%) translateY(-50%);
}

h1 {
	font-size: 100px;
	text-align: center;
}

#rectangle {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
}

#code {
	margin-top: 180px;
	text-align: center;
}