效果图
<html lang="en">
<head>
<meta charset="UTF-8">
<title>宇宙</title>
<style>
html,body {
height: 100%;
}
body{
padding: 0;
margin: 0;
background: #080e24 url(./images/bg.jpg) repeat;
}
ul {
height: 600px;
width: 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-name:orbit;
animation-timing-function:linear;
}
ul li span {
display: block;
position: absolute;
left: 0;
height: 12px;
width: 12px;
border-radius: 50%;
}
ul li:nth-child(1){
height: 60px;
width: 60px;
border:none;
box-shadow:0 0 5px #c90;
background-color: #c90;
animation-duration:5s;
}
ul li:nth-child(2){
height: 120px;
width: 120px;
animation-duration:6s;
}
ul li:nth-child(2) span{
background-color: yellow;
left: 80px;
top:0;
}
ul li:nth-child(3){
height: 180px;
width: 180px;
animation-duration:10s;
}
ul li:nth-child(3) span{
background-color:blue;
left: 47px;
top:0;
}
ul li:nth-child(4){
height: 240px;
width: 240px;
animation-duration:14s;
}
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){
height: 300px;
width: 300px;
animation-duration:17s;
background-image: url(./images/asteroids_meteorids.png);
background-size: cover;
}
ul li:nth-child(5) span{
background-color:red;
left: 95px;
top:0px;
}
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(0deg, 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);
}
}
</style>
</head>
<body>
<ul>
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<li><span></span></li>
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</ul>
</body>
</html>
