* {
	box-sizing: border-box;
}

body {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	height: 100vh;
	overflow: hidden;
	margin: 0;
}

.background {
	background: url("https://source.unsplash.com/random") no-repeat center center/cover;
	position: absolute;
	top: -20px;
	bottom: -20px;
	left: -20px;
	right: -20px;
	z-index: -1;
	filter: blur(20px);
}