标签：box 2px 1px Animation rgba shadow example CSS 255
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box {
width: 500px;
height: 500px;
margin: 100px auto;
background-color: hsl(175, 65%, 38%);
border-radius: 50%;
box-shadow: 0 1px 2px rgba(0, 0, 0, 3);
animation: yshysh 3s ease-in-out infinite alternate;
}
@keyframes yshysh {
0% {
opacity: 0.2;
box-shadow: 0 1px 2px rgba(255, 255, 255, 0.1)
}
50% {
opacity: 0.5;
box-shadow: 0 1px 2px rgba(18, 190, 84, 0.76)
}
100% {
opacity: 1;
box-shadow: 0 1px 2px rgb(36, 226, 226)
}
}
</style>
</head>
<body>
<div class="box"></div>
</body>
</html>
标签：box,
2px,
1px,
Animation,
rgba,
shadow,
example,
CSS,
255
From： https://www.cnblogs.com/iplatform/p/18115345/Animation