title: change button border color when the button is being clicked and after
body: <p>What to do to change navbar-toggle button behaviour when the button is being clicked and after?
  It gets some blue border color.</p>
  
  <pre><code>&lt;nav class="navbar navbar-default navbar-fixed-top" role="navigation"&gt;
  &lt;div class="container"&gt;
      &lt;div class="navbar-header"&gt;
          &lt;button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar"&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;                        
          &lt;/button&gt;
          &lt;a class="navbar-brand" href="#"&gt;WebSiteName&lt;/a&gt;
      &lt;/div&gt;
      &lt;div class="collapse navbar-collapse" id="myNavbar"&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  &lt;/nav&gt;
  </code></pre>