效果图：
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>网站建设中</title><style>/* 基础样式 */body, html {margin: 0;padding: 0;height: 100%;font-family: Arial, sans-serif;}.container {position: relative;height: 100vh;background-color: #282c36;color: #fff;text-align: center;}/* 垂直居中内容 */.content {position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);}h1 {font-size: 3em;margin-bottom: 10px;}p {font-size: 1.5em;}/* 加点动画 */.content span {animation: blink 1.5s linear infinite;}@keyframes blink {0%, 100% { opacity: 1; }50% { opacity: 0; }}</style>
</head>
<body><div class="container"><div class="content"><h1>网站建设中</h1><p>谢谢你的访问！网站还在建设中，<span><font color='red'><b>请耐心等待</b></font></span>。</p></div></div></body>
</html>
![Wireshark技巧[监听串口包]](https://img-blog.csdnimg.cn/1f596e2b735443d09f493a2a6a3f96b2.png)
