title: Bootstrap button outline
body: <p>I have a problem with a button. </p>
  
  <p>I want to fix that gray effect on click but i don't know how to do so. </p>
  
  <pre><code>&lt;div class="col-lg-7 col-sm-5 col-md-11"&gt;
                          &lt;form class="navbar-form"&gt;
                          &lt;div class="input-group"&gt;
                              &lt;input type="text" class="form-control" placeholder="Look for something cool"&gt;
                              &lt;div class="input-group-append"&gt;
                                  &lt;button class="btn btn-outline-secondary"&gt;&lt;i class="fas fa-search"&gt;&lt;/i&gt;&lt;/button&gt;
                              &lt;/div&gt;
  </code></pre>