问题描述
用于折叠侧边菜单的 Bootstrap 5 示例非常适合我的项目。但是，他们在示例页面上提供的示例 CSS 将折叠 V 形和链接视为一个展开/折叠按钮。我想使用这个例子，但无论我尝试什么，我都无法从文本中分离人字形并保留列表格式。您如何将人字形与示例 HTML/CSS 中的文本分开，以便人字形显示和隐藏子菜单，而文本是一个链接并保留示例中显示的格式？
Bootstrap 5 侧边栏“可折叠”示例页面 https://getbootstrap.com/docs/5.0/examples/sidebars/
示例中使用的 Bootstrap 5 侧边栏“可折叠”自定义 CSS https://getbootstrap.com/docs/5.0/examples/sidebars/sidebars.css
我的 HTML 已经从原始示例修改为提供一个子可折叠菜单。下面的代码中省略了 Bootstrap 5 自定义 CSS，因为我一直在使用它，而没有从上面的 URL 中修改。
<!DOCTYPE html>
<html lang="en">
<head>
<Meta charset="UTF-8">
<Meta http-equiv="X-UA-Compatible" content="IE=edge">
<Meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>Bootstrap 5 Collapse Nav</title>
<!-- Bootstrap 5 Core css-->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
</head>
<body>
<div class="flex-shrink-0 p-3 bg-white" style="width: 280px;">
<a href="/" class="d-flex align-items-center pb-3 mb-3 link-dark text-decoration-none border-bottom">
<svg class="bi me-2" width="30" height="24">
<use xlink:href="#bootstrap" />
</svg>
<span class="fs-5 fw-semibold">Collapsible</span>
</a>
<ul class="list-unstyled ps-0">
<li class="mb-1">
<button class="btn btn-toggle align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#home-collapse" aria-expanded="true">
Home
</button>
<div class="collapse show" id="home-collapse">
<ul class="btn-toggle-nav list-unstyled fw-normal pb-1 small">
<!-- Begin Home nested Collapse Menu -->
<button style="margin-left: 1.5em;" class="btn-small btn-toggle align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#second-collapse" aria-expanded="false">
Second Level
</button>
<div style="margin-left: 1.5em;" class="collapse" id="second-collapse">
<ul class="btn-toggle-nav list-unstyled fw-normal pb-1 small">
<li><a href="#" class="link-dark rounded">Overview</a></li>
<li><a href="#" class="link-dark rounded">Weekly</a></li>
<li><a href="#" class="link-dark rounded">Monthly</a></li>
<li><a href="#" class="link-dark rounded">Annually</a></li>
</ul>
</div>
<!-- End Home nested Collapse Menu -->
<li><a href="#" class="link-dark rounded">Overview</a></li>
<li><a href="#" class="link-dark rounded">Weekly</a></li>
</ul>
</div>
</li>
<li class="mb-1">
<button class="btn btn-toggle align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#dashboard-collapse" aria-expanded="false">
Dashboard
</button>
<div class="collapse" id="dashboard-collapse">
<ul class="btn-toggle-nav list-unstyled fw-normal pb-1 small">
<li><a href="#" class="link-dark rounded">Overview</a></li>
<li><a href="#" class="link-dark rounded">Weekly</a></li>
<li><a href="#" class="link-dark rounded">Monthly</a></li>
<li><a href="#" class="link-dark rounded">Annually</a></li>
</ul>
</div>
</li>
<li class="mb-1">
<button class="btn btn-toggle align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#orders-collapse" aria-expanded="false">
Orders
</button>
<div class="collapse" id="orders-collapse">
<ul class="btn-toggle-nav list-unstyled fw-normal pb-1 small">
<li><a href="#" class="link-dark rounded">New</a></li>
<li><a href="#" class="link-dark rounded">Processed</a></li>
<li><a href="#" class="link-dark rounded">Shipped</a></li>
<li><a href="#" class="link-dark rounded">Returned</a></li>
</ul>
</div>
</li>
<li class="border-top my-3"></li>
<li class="mb-1">
<button class="btn btn-toggle align-items-center rounded collapsed" data-bs-toggle="collapse" data-bs-target="#account-collapse" aria-expanded="false">
Account
</button>
<div class="collapse" id="account-collapse">
<ul class="btn-toggle-nav list-unstyled fw-normal pb-1 small">
<li><a href="#" class="link-dark rounded">New...</a></li>
<li><a href="#" class="link-dark rounded">Profile</a></li>
<li><a href="#" class="link-dark rounded">Settings</a></li>
<li><a href="#" class="link-dark rounded">Sign out</a></li>
</ul>
</div>
</li>
</ul>
</div>
<!-- Boostrap 5 JS Bundle -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-gtEjrD/SeCtmISkJkNUaaKMoLD0//ElJ19smozuHV6z3Iehds+3Ulb9Bn9Plx0x4" crossorigin="anonymous"></script>
</body>
</html>解决方法
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