@keyframes disco
{
	0% {
		border-color: blue;
		box-shadow: 0 0 20px blue;
	}
	25% {
		border-color: green;
		box-shadow: 0 0 20px green;
	}
	50% {
		border-color: red;
		box-shadow: 0 0 20px red;
	}
	75% {
		border-color: yellow;
		box-shadow: 0 0 20px yellow;
	}
	100% {
		border-color: purple;
		box-shadow: 0 0 20px purple;
	}
}


header, footer
{
	animation-name: disco;
	animation-duration: 1s;
	animation-iteration-count: infinite;
}