代码如下
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
div{
width: 200px;
height: 200px;
background: red;
margin: 150px auto;
filter: drop-shadow(0 0 30px red);
transform: rotate(45deg);
animation: jump 1s linear infinite;
}
div:before,div:after{
width: 200px;
height: 200px;
background: red;
content: "";
display: block;
position: relative;
border-radius: 50%;
}
div:before{
left: -100px;
}
div:after{
top: -300px;
}
@keyframes jump{
0%{transform: rotate(45deg) scale(.8);}
100%{transform: rotate(45deg) scale(.8);}
60%{transform: rotate(45deg) scale(1.2);}
}
</style>
</head>
<body>
<div></div>
如果不考虑是否符合w3c的标准, 用下面的代码也能出来
<style>
div{
margin: 150px auto;
filter: drop-shadow(0 0 30px red);
transform: rotate(45deg);
animation: jump 1s linear infinite;
}
div:before{
left: -100px;
}
div:after{
top: -300px;
}
div:before,div:after{
content: "";
display: block;
position: relative;
border-radius: 50%;
}
div,div:before,div:after{
width: 200px;
height: 200px;
background: red;
}
@keyframes jump{
0%{transform: rotate(45deg) scale(.8);}
100%{transform: rotate(45deg) scale(.8);}
60%{transform: rotate(45deg) scale(1.2);}
}
</style>
<div></div>