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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>拉伸对齐项目（默认）</h2> <p>使用 .align-items-*-stretch 类在不同屏幕上拉伸单行项目。</p> <p><code>.align-items-stretch</code>:</p> <div class="d-flex align-items-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-items-sm-stretch</code>:</p> <div class="d-flex align-items-sm-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-items-md-stretch</code>:</p> <div class="d-flex align-items-md-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-items-lg-stretch</code>:</p> <div class="d-flex align-items-lg-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-items-xl-stretch</code>:</p> <div class="d-flex align-items-xl-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-items-xxl-stretch</code>:</p> <div class="d-flex align-items-xxl-stretch bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> </div> </body> </html>