style.css

@import url(https://fonts.googleapis.com/css?family=Press+Start+2P);
html {
	background: url(dU18gto.gif);
	background-repeat: no-repeat;
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
}
.box {
	backdrop-filter: blur(50px);
	-webkit-backdrop-filter: blur(50px);
	max-width: 100%;
	max-height: 100%;
	box-shadow: 0 30px 40px rgba(0, 0, 0, .1);
}
.logo {
	-webkit-animation: flicker 1500ms infinite alternate-reverse;
	-webkit-animation-timing-function: step-start;
	background-image: url(Yn2T9.png);
	height: 236px;
	margin: -60px auto auto auto;
	width: 474px;
}
.error {
	background: url(dU18gto.gif);
	border-radius: 3px;
	box-shadow: 0px 10px 100px 20px rgba(0, 172, 239, .1), inset 0px -2px 0px rgba(0, 172, 239, .15), inset 0px 2px 5px #000;
	font-family: "Press Start 2P";
	font-size: 7pt;
	font-weight: 100;
	margin: -40px auto auto auto;
	padding: 10px;
	border: 1px solid #ff00ea;
	text-align: center;
	width: 340px;
}
.error p {
	color: rgba(0, 172, 239, .8);
	padding: 0;
	margin: 0;
	z-index: 5;
}
@-webkit-keyframes flicker {
	0% {
		background-position: 0px 0px;
	}
	50% {
		background-position: 0px 0px;
	}
	61% {
		background-position: 0px 0px;
	}
	67% {
		background-position: 0px 0px;
	}
	68% {
		background-position: 0px -472px;
	}
	72% {
		background-position: 0px -236px;
	}
	78% {
		background-position: 0px -472px;
	}
	80% {
		background-position: 0px -236px;
	}
	76% {
		background-position: 0px -236px;
	}
	81% {
		background-position: 0px -472px;
	}
	89% {
		background-position: 0px -236px;
	}
	100% {
		background-position: 0px -472px;
	}
}