How to vertical align middle a button in a dynamic div

Answer 1

The problem is that the padding on the H4 is more than the button. You can wrap you button inside the H4 (perhaps not the best practice), or change the button padding in your CSS..

  

    

    
        
    
    
  
  

    
 {{rootNode.nodeName}}
  

OR, leave the button as is, and apply this CSS to the H4..

h4 {
  margin-top: -0.5em;
}

http://bootply.com/106259