title: Select2 dropdown css modification
body: <p>I have this situation:</p>
  
  <p><a href="https://i.stack.imgur.com/qOetq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qOetq.png" alt="enter image description here"></a></p>
  
  <p>and I'd like to move the <code>.select2-dropdown .select2-dropdown--below</code> to <code>left: 0</code> and <code>witdth: 100%</code>(relative to the window). As you can see, I already added a <code>top</code> to it, but it doesn't work for the other properties.</p>
  
  <p>I use the last version of the plugin.</p>
  
  <p>I added an example. Do you see that hr? I'd like the dropdown to start from the left and be full width like the rule.</p>
  
  <p><a href="https://jsfiddle.net/770uxpmy/2/" rel="nofollow noreferrer">jsFiddle</a></p>