title: Bootstrap 4 navbar doesn't show Toggler
body: <p>I created an Angular 5 application and included Bootstrap 4 via index.html. I made a basic navbar component and tried to include it in my app. But in responsive mode, I am not able to see the toggler, it appears white but when inspecting I can see it as well as clicking on it also shows the menu. Why is it not being displayed properly?</p>
  
  <p>I am using a simple navbar like below:</p>
  
  <pre><code>&lt;nav class="navbar navbar-expand-lg shift"&gt;
    &lt;a class="navbar-brand" href="#"&gt;
      &lt;img src="logo.png" alt="Brand Logo" /&gt;
    &lt;/a&gt;
    &lt;button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown"
      aria-expanded="false" aria-label="Toggle navigation"&gt;
      &lt;span class="navbar-toggler-icon"&gt;&lt;/span&gt;
    &lt;/button&gt;
    &lt;div class="collapse navbar-collapse" id="navbarNavDropdown"&gt;
      &lt;ul class="nav nav-pills ml-auto"&gt;
        &lt;li class="nav-item"&gt;
          &lt;a class="nav-link" href="#"&gt;Features&lt;/a&gt;
        &lt;/li&gt;
        &lt;li class="nav-item"&gt;
          &lt;a class="nav-link" href="#"&gt;Exams&lt;/a&gt;
        &lt;/li&gt;
        &lt;li class="nav-item"&gt;
          &lt;a class="nav-link" href="#"&gt;Contact&lt;/a&gt;
        &lt;/li&gt;
      &lt;/ul&gt;
    &lt;/div&gt;
  &lt;/nav&gt;
  </code></pre>
  
  <p>Here is my fiddle: <a href="https://jsfiddle.net/t4h0w4pw/" rel="nofollow noreferrer">jsfiddle</a></p>