css加载动画(四)

html代码:

<div id="preloader_6">
	<span></span>
	<span></span>
	<span></span>
	<span></span>
</div>

css代码:

#preloader_6 {
	position: relative;
	top: 100px;
	margin: auto;
	bottom: 0;
	left: 0;
	right: 0;
	width: 42px;
	height: 42px;
	animation: preloader_6 5s infinite linear;
}

#preloader_6 span {
	width: 20px;
	height: 20px;
	position: absolute;
	background: red;
	display: block;
	animation: preloader_6_span 1s infinite linear;
}

#preloader_6 span:nth-child(1) {
	background: #2ecc71;
}

#preloader_6 span:nth-child(2) {
	left: 22px;
	background: #9b59b6;
	animation-delay: .2s;
}

#preloader_6 span:nth-child(3) {
	top: 22px;
	background: #3498db;
	animation-delay: .4s;
}

#preloader_6 span:nth-child(4) {
	top: 22px;
	left: 22px;
	background: #f1c40f;
	animation-delay: .6s;
}

@keyframes preloader_6 {
	from {
		-ms-transform: rotate(0deg);
	}
	to {
		-ms-transform: rotate(360deg);
	}
}

@keyframes preloader_6_span {
	0% {
		transform: scale(1);
	}
	50% {
		transform: scale(0.5);
	}
	100% {
		transform: scale(1);
	}
}