Мы реализуем Bootstrap 4 в zalando / tailor.js (основанном на https://github.com/zalando/tailor) микро-интерфейсе базового приложения, которое является приложением NodeJS.
Реализован Bootstrap4 согласно https://getbootstrap.com документации.
Отсюда просто скопировал navbar - https://getbootstrap.com/docs/4.0/components/navbar/
Раскрывающееся меню не работает в данном примере с getbootstrap.com, когда визуализируется через приложение NodeJS на основе zalando / tailor.js.
Вот ошибка в консоли -
analytics.js: 1 GET https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js net :: ERR_ABORTED 403 (запрещено)
(анонимно) @ analytics.js: 1
(анонимно) @ analytics.js: 1
(анонимно) @ analytics.js: 1
Мой код здесь -
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.22/require.min.js" crossorigin=""></script>
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