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body {
	margin:0;
	padding:0;
	background:#080e24 url(./bg.jpg) repeat;
}
ul {
	width:600px;
	height:600px;
	margin:40px auto;
	position:relative;
	list-style:none;
}
ul li {
	border:2px solid #394057;
	position:absolute;
	left:50%;
	top:50%;
	border-radius:50%;
	transform:translate(-50%,-50%);
	box-sizing:border-box;
	animation-iteration-count:infinite;
	animation-timing-function:linear;
	animation-name:orbit;
}
ul li span {
	display:block;
	position:absolute;
	left:0;
	width:12px;
	height:12px;
	border-radius:50%;
}
ul li:nth-child(1) {
	width:60px;
	height:60px;
	border:none;
	box-shadow:0 0 50px #c90;
	background-color:#C90;
	animation-duration:5s;
}
ul li:nth-child(2) {
	width:120px;
	height:120px;
	animation-duration:6s;
}
ul li:nth-child(2) span {
	background-color:yellow;
	left:80px;
	top:0;
}
ul li:nth-child(3) {
	width:180px;
	height:180px;
	animation-duration:10s;
}
ul li:nth-child(3) span {
	background-color:blue;
	left:47px;
	top:0;
}
ul li:nth-child(4) {
	width:240px;
	height:240px;
	animation-duration:12s;
}
ul li:nth-child(4) > span {
	background-color:green;
	left:209px;
	top:43px;
	animation:orbit 2s infinite linear;
}
ul li:nth-child(4) > span span {
	width:6px;
	height:6px;
	left:16px;
	background-color:yellow;
}
ul li:nth-child(5) {
	width:300px;
	height:300px;
	background-image:url(./asteroids_meteorids.png);
	background-size:cover;
	animation-duration:25s;
}
ul li:nth-child(5) span {
	background-color:red;
	left:95px;
	top:0;
}
ul li:nth-child(6) {
	width:360px;
	height:360px;
	animation-duration:20s;
}
ul li:nth-child(6) span {
	background-color:#CCC;
	left:-5px;
	top:200px;
}
ul li:nth-child(7) {
	width:420px;
	height:420px;
	animation-duration:30s;
}
ul li:nth-child(7) > span {
	background-color:green;
	left:300px;
	top:18px;
}
ul li:nth-child(7) > span span {
	width:15px;
	height:15px;
	border:2px solid #CCC;
	left:-4px;
	top:-4px;
	transform:skew(0,45deg);
}
ul li:nth-child(8) {
	width:480px;
	height:480px;
	animation-duration:35s;
}
ul li:nth-child(8) span {
	background-color:pink;
	left:0;
	top:170px;
}
ul li:nth-child(9) {
	width:540px;
	height:540px;
	animation-duration:40s;
}
ul li:nth-child(9) span {
	background-color:blue;
	left:47px;
	top:100px;
}
ul li:nth-child(10) {
	width:600px;
	height:600px;
	animation-duration:45s;
}
ul li:nth-child(10) span {
	background-color:yellow;
	left:224px;
	top:0;
}
@keyframes orbit {
	0% {
	transform:translate(-50%,-50%) rotate(0deg);
}
100% {
	transform:translate(-50%,-50%) rotate(360deg);
}
}

                        
↑上面代码改变,会自动显示代码结果 jQuery调用版本:1.11.3
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