body {
	padding: 0;
	margin: 0;
	background-color: #494949;
}

#box {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
}

h1 {
	color: red;
	padding: 0;
	margin: 0;
	font-family: monospace;
	font-size: 25px;
	user-select: none;
	animation: rainbow 10s linear infinite;
}

h1:hover {
	font-size: 30px;
}

@keyframes rainbow{
	0% {
		color: hsl(0deg,100%,50%);
	}
	10% {
		color: hsl(36deg,100%,50%);
	}
	20% {
		color: hsl(72deg,100%,50%);
	}
	30% {
		color: hsl(108deg,100%,50%);
	}
	40% {
		color: hsl(144deg,100%,50%);
	}
	50% {
		color: hsl(180deg,100%,50%);
	}
	60% {
		color: hsl(216deg,100%,50%);
	}
	70% {
		color: hsl(252deg,100%,50%);
	}
	80% {
		color: hsl(288deg,100%,50%);
	}
	90% {
		color: hsl(324deg,100%,50%);
	}
	100% {
		color: hsl(0deg,100%,50%);
	}
}