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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>多个进度条</h2> <p>通过将多个进度条放入同一个 class="progress" 的 div，创建一个堆叠进度条：</p> <div class="progress"> <div class="progress-bar bg-success" style="width:40%"> 空闲空间 </div> <div class="progress-bar bg-warning" style="width:10%"> 警告 </div> <div class="progress-bar bg-danger" style="width:20%"> 危险 </div> </div> </div> </body> </html>