<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 实例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h1>高度 Utility</h1>
<p>使用 h-* 类（.h-25、.h-50、.h-75、.h-100、.mh-auto、.mh-100）设置元素的高度：</p>
<div style="height:200px;background-color:#ddd">
<div class="h-25 d-inline-block p-2 bg-warning">高度 25%</div>
<div class="h-50 d-inline-block p-2 bg-warning">高度 50%</div>
<div class="h-75 d-inline-block p-2 bg-warning">高度 75%</div>
<div class="h-100 d-inline-block p-2 bg-warning">高度 100%</div>
<div class="h-auto d-inline-block p-2 bg-warning">自动高度</div>
<div class="mh-100 d-inline-block p-2 bg-warning" style="height:500px">最大高度 100%</div>
</div>
</div>
</body>
</html>