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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"> <h1>Display 标题</h1> <p>Display 标题用于比普通标题更突出（更大的 font-size 和更细的 font-weight）：</p> <h1 class="display-1">Display 1</h1> <h1 class="display-2">Display 2</h1> <h1 class="display-3">Display 3</h1> <h1 class="display-4">Display 4</h1> <h1 class="display-5">Display 5</h1> <h1 class="display-6">Display 6</h1> </div> </body> </html>