<!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>基线上对齐运算</h2>
<p>.align-items-*-baseline 类根据不同屏幕设备,让元素在基线上显示在同一行。</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-baseline</code>:</p>
<div class="d-flex align-items-baseline 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-baseline</code>:</p>
<div class="d-flex align-items-sm-baseline 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-baseline</code>:</p>
<div class="d-flex align-items-md-baseline 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-baseline</code>:</p>
<div class="d-flex align-items-lg-baseline bg-light" style="height:150px">
<div class="p-2 border">Flex item 1</div>
<div class="p-2 border">Flex item 2</div>
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