title: How to add dropdown arrow under caret in Bootstrap 4?
body: <p>I am using the Bootstrap 4 dropdown option.</p>
  
  <p>I wanted to add an up arrow for the dropdown menu in the top left.</p>
  
  <p>In Bootstrap 3, we have a caret markup on the button, so we can add the arrow to the dropdown menu.</p>
  
  <p>But in Bootstrap 4, we don't have a caret markup, using the <code>dropdown-toggle</code> class only caret is added.</p>
  
  <p>How can we add arrow to dropdown menu here?</p>
  
  <p>I added the Bootstrap 3 example link:</p>
  
  <p><a href="https://www.bootply.com/QD8FO89DcY" rel="nofollow noreferrer">https://www.bootply.com/QD8FO89DcY</a></p>
  
  <p>The same functionality is needed in Bootstrap 4.</p>