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<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <div style="height:200px;background-color:#ddd"> <div class="h-25 d-inline-block p-2 bg-warning">高度为 25%</div> <div class="h-50 d-inline-block p-2 bg-warning">高度为 50%</div> <div class="h-75 d-inline-block p-2 bg-warning">高度为 75%</div> <div class="h-100 d-inline-block p-2 bg-warning">高度为 100%</div> <div class="h-auto d-inline-block p-2 bg-warning">自动设置高度</div> <div class="mh-100 d-inline-block p-2 bg-warning" style="height:500px">最大高度为 100%</div> </div> </div> </body> </html>
运行结果：