title: Why is the Bootstrap Navbar always collapsed?
body: <p>I updated to the v1.0-beta of ng-bootstrap. Now the navbar is always collaped. When I click on the hamburger to toggle the menu, it opens, but displays the contents vertically rather than horizontally. </p>
  
  <p>I've included the code for the nav below. It's the same as it before. At this point I can't tease out if the issue lies with ng-bootstrap, bootstrap 4 or a combination thereof. </p>
  
  <p>My ideal outcome is for the menu to only appear once the screen is under a certain size, like in the old days.</p>
  
  <p>I did see <a href="https://stackoverflow.com/questions/45873626/bootstrap4-navbar-always-collapsed">Bootstrap4 navbar always collapsed</a>. I've opened this question since it did not include ng-bootstrap.</p>
  
  <pre><code>&lt;nav class="navbar navbar-toggleable-sm navbar-light bg-faded fixed-top" style="background-color: white"&gt;
    &lt;button class="navbar-toggler navbar-toggler-right" 
      type="button" (click)="isNavbarCollapsed = !isNavbarCollapsed" 
      aria-controls="exCollapsingNavbar2"
      data-toggle="collapse"
      aria-expanded="false" aria-label="Toggle navigation"&gt;
      &lt;span class="navbar-toggler-icon"&gt;&lt;/span&gt;
    &lt;/button&gt;
    &lt;a class="navbar-brand" href="#"&gt;Vesalius - Bobby's World&lt;/a&gt;
    &lt;div [ngbCollapse]="isNavbarCollapsed" class="collapse navbar-collapse" id="exCollapsingNavbar2"&gt;
      &lt;div class="navbar-nav mr-auto"&gt;
        &lt;a class="nav-item nav-link" routerLink="/provider/portal/" routerLinkActive="active"&gt;Schedule&lt;/a&gt;
        &lt;a class="nav-item nav-link" routerLink="/patient/portal/medical-history" routerLinkActive="active"&gt;Form Editor&lt;/a&gt;
      &lt;/div&gt;
  
      &lt;div class="navbar-nav"&gt;
        &lt;form class="form-inline"&gt;
          &lt;input class="form-control mr-sm-2" type="text" placeholder="Search Patient"&gt;
          &lt;button class="btn btn-outline-success my-2 my-sm-0" type="submit"&gt;Search&lt;/button&gt;
        &lt;/form&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/nav&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/5TE7k.png" rel="noreferrer"><img src="https://i.stack.imgur.com/5TE7k.png" alt="enter image description here"></a></p>