body {
    background-color: black;
}
@keyframes changeColor {
	0% {
		color: red;
	}
	25% {
		color: green;
	}
	50% {
		color: blue;
	}
	75% {
		color: purple;
	}
	100% {
		color: yellow;
	}
}

h1 {
    font-family: 'Press Start 2P', cursive;
    font-size: 72px;
    color: blue;
    animation: changeColor 1s steps(2, start) infinite;
}