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<!DOCTYPE html> <html> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container mt-3"> <h2>元素对齐</h2> <p>.align-items-*-end 类根据不同屏幕设备，让元素在尾部显示在同一行。</p> <p>重置浏览器窗口大小，查看效果。 <strong>注意:</strong> align-items-stretch 是默认的。</p> <p><code>.align-items-end</code>:</p> <div class="d-flex align-items-end 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-end</code>:</p> <div class="d-flex align-items-sm-end 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-end</code>:</p> <div class="d-flex align-items-md-end 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-end</code>:</p> <div class="d-flex align-items-lg-end 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-end</code>:</p> <div class="d-flex align-items-xl-end 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>
运行结果：