*{
	margin:0;
	padding:0;
}

body{
	background: blue;
	overflow: hidden;
}

header{
	display: none;
}

@keyframes rotate360 {
	0% 		{transform: rotate(0deg);}
	100% 	{transform: rotate(360deg);}
}

section{
	float:left;
	width: 6.25vw;
	height:11.111111vh;
	background-color:red;
	animation-name: rotate360;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
}

	.black {
		background-color:black;
		animation-duration: 1s;
	}

	.green {
		background-color:green;
		animation-duration: 5s;
	}

	.pink{
		background-color:pink;
		animation-duration: 10s;
	}

	.white{
		background-color:white;
		animation-duration: 15s;
	}

	.gray{
		background-color:gray;
		animation-duration: 18s;
	}