.flex-column 类用于创建垂直导航:
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<html>
<head>
<title>Bootstrap4 实例</title>
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</head>
<body>
<div class="container">
<h2>垂直导航</h2>
<p>.flex-column 类用于创建垂直导航:</p>
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
</div>
</body>
</html>
尝试一下 |