小库编程教程示范演示-小库网

Bootstrap5 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js"></script>

<div class="container mt-3">
  <h2>元素居中对齐</h2>
  <p>.align-items-*-center 类根据不同屏幕设备，让元素在中间位置显示在同一行。 </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-center</code>:</p>
  <div class="d-flex align-items-center 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-center</code>:</p>
  <div class="d-flex align-items-sm-center 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-center</code>:</p>
  <div class="d-flex align-items-md-center 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-center</code>:</p>
  <div class="d-flex align-items-lg-center 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-center</code>:</p>
  <div class="d-flex align-items-xl-center 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>
	
  <p><code>.align-items-xxl-center</code>:</p>
  <div class="d-flex align-items-xxl-center 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>