title: Full width split dropdown
body: <p>I am trying to do this by using Bootstrap-Vue, ¿any idea?.</p>
  
  <pre><code>Code &amp; result:
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/J3ypA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/J3ypA.png" alt="enter image description here"></a></p>
  
  <p>It works fine in <a href="https://jsfiddle.net/jpablogn/k2cx4m8h/1" rel="nofollow noreferrer">Fiddle</a>.</p>
  
  <p>In my PC it works if I take out "scoped" from "style", ¿why?</p>