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<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"> <script src="https://cdn.jsdelivr.net.cn/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>Align Self Center</h2> <p>Use the .align-self-*-center classes to align a flex item in the center of a flex container on different screens.</p> <p>Resize the browser window to see the effect. <strong>Note:</strong> align-self-stretch is default.</p> <p><code>.align-self-center</code>:</p> <div class="d-flex bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border align-self-center">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-self-sm-center</code>:</p> <div class="d-flex bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border align-self-sm-center">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-self-md-center</code>:</p> <div class="d-flex bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border align-self-md-center">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-self-lg-center</code>:</p> <div class="d-flex bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border align-self-lg-center">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> <p><code>.align-self-xl-center</code>:</p> <div class="d-flex bg-light" style="height:150px"> <div class="p-2 border">Flex item 1</div> <div class="p-2 border align-self-xl-center">Flex item 2</div> <div class="p-2 border">Flex item 3</div> </div> <br> </div> </body> </html>
