<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
#x{
position: fixed;
left: 80%;
top: 90%;
display: block;
}
</style>
</head>
<body>
<p id="top">321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<p>321</p>
<div id="x">
<a href="#top" >回到顶部</a>
</div>
</body>
</html>
此博客围绕HTML回到顶部功能展开，虽无具体内容，但可知聚焦于利用HTML技术达成回到页面顶部的操作，这在网页设计中较为常见，能提升用户浏览体验。
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