设置CSS动画开始的延迟
使用animation-delay属性设置使用CSS动画开始的延迟：
示例
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 150px;
height: 200px;
background-color: yellow;
animation-name: myanim;
animation-duration: 2s;
animation-delay: 2s;
}
@keyframes myanim {
from {
background-color: green;
}
to {
background-color: blue;
}
}
</style>
</head>
<body>
<div></div>
</body>
</html>