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八卦旋转
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>CSS3旋转的太极</title>
<style>
.taiji {
margin:50px auto 0;
height:200px;
width:200px;
animation:run-inner 2s infinite linear;
}
@keyframes run-inner {
0% {
transform:rotate(0deg)
}
25% {
transform:rotate(-90deg)
}
50% {
transform:rotate(-180deg)
}
75% {
transform:rotate(-270deg)
}
100% {
transform:rotate(-360deg)
}
}.a {
width:200px;
height:100px;
border:1px solid #D3D3D3;
border-bottom:0px;
border-radius:100px 100px 0 0;
background:#fff;
position:relative;
}
.a:after {
content:"";
background:#fff;
width:15px;
height:15px;
border-radius:50%;
position:absolute;
top:72px;
left:147px;
}
.a .inner {
width:100px;
height:50px;
position:absolute;
bottom:0;
right:0;
background:#000;
border-radius:50px 50px 0 0;
}
.b {
width:201px;
height:101px;
border:1px solid #D3D3D3;
border-top:0px;
border-radius:0 0 100px 100px;
background:#000;
position:relative;
}
.b:after {
content:"";
background:#000;
width:15px;
height:15px;
border-radius:50%;
position:absolute;
bottom:72px;
right:147px;
}
.b .inner {
width:100px;
height:50px;
position:absolute;
top:0;
left:0;
background:#fff;
border-radius:0 0 50px 50px;
}
</style>
</head>
<body>
<div class="taiji">
<div class="a">
<div class="inner">
</div>
</div>
<div class="b">
<div class="inner">
</div>
</div>
</div>
<script>
</script>
</body>
</html>
八卦旋转