I'm struggling to vertically align text within a Bootstrap (3) <a> when it works properly in a <button>
The HTML :
<button class="btn">some text<span class="glyphicon glyphicon-play pull-right"></span></button>
</br>
</br>
</br>
<a href="#" class="btn">some text<span class="glyphicon glyphicon-play pull-right"></span></a>
The CSS :
.btn {
  width: 315px;
  height: 40px;
  background-color: #ff38a4;
  color: #fff;
  display: inline-block;
  margin-bottom: 0;
  font-weight: normal;
  text-align: left;
  vertical-align: middle;
  -ms-touch-action: manipulation;
  touch-action: manipulation;
  cursor: pointer;
  background-image: none;
  border: 1px solid transparent;
  white-space: nowrap;
  padding: 4px 8px;
  font-size: 14px;
  line-height: 1.42857143;
  border-radius: 0;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-box-shadow: 2px 2px 2px 0 rgba(0, 0, 0, 0.5);
  -moz-box-shadow: 2px 2px 2px 0 rgba(0, 0, 0, 0.5);
  box-shadow: 2px 2px 2px 0 rgba(0, 0, 0, 0.5);
}
And the output :
And a codepen of the problem : http://codepen.io/anon/pen/vyOaao
How do I align the text and icon centrally using an <a> tag?

 
     
    
 
     
     
     
    