html,
body {
	height: 100%;
	overflow: hidden;
}

.error-page {
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	height: 100%;
	font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;

	padding-top: 60px;
}

.error-page h1 {
	font-size: 30vh;
	font-weight: bold;
	position: relative;
	margin: -8vh 0 0;
	padding: 0;
}

.error-page h1:after {
	content: attr(data-h1);
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	color: transparent;
	/* webkit only for graceful degradation to IE */
	background: -webkit-repeating-linear-gradient(
		-45deg,
		#71b7e6,
		#69a6ce,
		#b98acc,
		#ee8176,
		#b98acc,
		#69a6ce,
		#9b59b6
	);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-size: 400%;
	text-shadow: 1px 1px 2px transparentize(#fff, 0.75);
	animation: animateTextBackground 10s ease-in-out infinite;
}

.error-page h1 + p {
	color: #d6d6d6;
	font-size: 8vh;
	font-weight: bold;
	line-height: 10vh;
	max-width: 600px;
	position: relative;
}

.error-page h1 + p:after {
	content: attr(data-p);
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	color: transparent;
	text-shadow: 1px 1px 2px transparentize(#fff, 0.5);
	-webkit-background-clip: text;
	-moz-background-clip: text;
	background-clip: text;
}

#tsparticles {
	position: fixed;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
}

@keyframes animateTextBackground {
	0% {
		background-position: 0 0;
	}

	25% {
		background-position: 100% 0;
	}

	50% {
		background-position: 100% 100%;
	}

	75% {
		background-position: 0 100%;
	}

	100% {
		background-position: 0 0;
	}
}

@media (max-width: 767px) {
	.error-page h1 {
		font-size: 32vw;
	}

	.error-page h1 + p {
		font-size: 8vw;
		line-height: 10vw;
		max-width: 70vw;
	}
}

a.back {
	position: fixed;
	right: 40px;
	bottom: 40px;
	background: -webkit-repeating-linear-gradient(-45deg, #71b7e6, #69a6ce, #b98acc, #ee8176);
	border-radius: 5px;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
	color: #fff;
	font-size: 16px;
	font-weight: bold;
	line-height: 24px;
	padding: 15px 30px;
	text-decoration: none;
	transition: 0.25s all ease-in-out;
}

a.back:hover {
	box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}