域名备案模板，首页底下正中央位置需要有备案号。
主要是给不太擅长于前端样式的人提供一个备案模板，直接把这个H5放到nginx的index.html就可以访问了
<html><body><div class="login-container"><h2>登录</h2><div class="login-form"><div class="form-group"><input type="text" placeholder="请输入用户名" /></div><div class="form-group"><input type="password" placeholder="请输入密码" /></div><button class="login-btn">登录</button><div class="form-links"><a href="#">忘记密码?</a><a href="#">注册账号</a></div></div></div><div class="beian-container"><a href="https://beian.miit.gov.cn/" target="_blank">备案号: 粤B2-20090059-1623A</a></div><style>body {margin: 0;min-height: 100vh;display: flex;align-items: center;justify-content: center;background-color: #f5f5f5;position: relative;}.login-container {width: 100%;max-width: 400px;padding: 20px;box-shadow: 0 0 10px rgba(0,0,0,0.1);border-radius: 5px;background-color: white;}.login-container h2 {text-align: center;color: #333;margin-bottom: 30px;}.form-group {margin-bottom: 20px;}.form-group input {width: 100%;padding: 10px;border: 1px solid #ddd;border-radius: 4px;font-size: 14px;box-sizing: border-box;}.login-btn {width: 100%;padding: 12px;background-color: #1890ff;color: white;border: none;border-radius: 4px;cursor: pointer;font-size: 16px;}.login-btn:hover {background-color: #40a9ff;}.form-links {margin-top: 15px;text-align: center;}.form-links a {color: #1890ff;text-decoration: none;margin: 0 10px;font-size: 14px;}.form-links a:hover {text-decoration: underline;}.beian-container {position: fixed;bottom: 20px;left: 0;right: 0;text-align: center;}.beian-container a {color: #666;text-decoration: none;font-size: 20px;}.beian-container a:hover {color: #1890ff;}</style></body>
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