title: how can I use bootstrap grid style in angular without disturbing/overriding angular material design
body: <p>If I use ng-bootstrap, <code>grid style</code> does not work but when I use bootstrap (providing it in style.css or in angular.json style[] array) grid style it works fine, but it overrides the angular material designs.</p>
  
  <p><code>ng-bootstrap and bootstrap both I installed from npm</code></p>
  
  <p>I used <code>&lt;div class="col-md-6 md-offset-3"&gt;&lt;/div&gt;</code></p>