实例：脉冲波纹催眠动画特效
技术栈：HTML+CSS
效果：
源码：
【html】
<!DOCTYPE html>
<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"><meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"><title>脉冲波纹催眠动画特效</title><link rel="stylesheet" href="165.css">
</head><body><div class="container"><div class="circle"></div><div class="circle"></div><div class="circle"></div><div class="circle"></div>
