title: How to make a scrollbar in bootstrap dropdown?
body: <p>How to create a scrollbar in bootstrap 4 dropdown selection. In my case if the files are too much then the dropdown will not fully loaded. So I plan to fix only 5 files to be displayed when the dropdown is clicked and have a scrollbar.</p>
  
  <p><a href="https://i.stack.imgur.com/FVrBb.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FVrBb.jpg" alt="enter image description here"></a></p>
  
  <p><strong>HTML</strong></p>
  
  <pre><code>&lt;div class="pd-ltr-20 customscroll customscroll-10-p height-auto xs-pd-20-10"&gt;
      &lt;div class="min-height-200px"&gt;
          &lt;div class="mb-30"&gt;
              &lt;div class="row"&gt;
                  &lt;div class="col-sm-12"&gt;
                      &lt;div class="form-group"&gt;
                          &lt;small class="form-text text-muted"&gt;Select ES Value&lt;/small&gt;
                          &lt;div class="custom-file"&gt;
                              &lt;select class="font-14 selectpicker form-control" data-width="100%"&gt;
                                  &lt;option value=""&gt;- ES VALUE -&lt;/option&gt;
                              &lt;/select&gt;
                          &lt;/div&gt;
                      &lt;/div&gt;
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>