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<!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"> <h2>进度条高度</h2> <p>进度条的高度默认为 1rem（通常为 16px）。请使用 CSS height 属性来更改它。</p> <div class="progress" style="height:10px"> <div class="progress-bar" style="width:40%;height:10px"></div> </div> <br> <div class="progress" style="height:20px"> <div class="progress-bar" style="width:50%;height:20px"></div> </div> <br> <div class="progress" style="height:30px"> <div class="progress-bar" style="width:60%;height:30px"></div> </div> </div> </body> </html>