<div class="centered">
<a href="#" title="WordPress" class="label label-primary">WordPress</a> 
<a href="#" title="Ghost" class="label label-primary">Ghost</a>
<a href="#" title="Bootstrap" class="label label-primary">Bootstrap</a> 
<a href="#" title="HTML5" class="label label-primary">HTML5</a>
<a href="#" title="CSS" class="label label-primary">CSS</a>
</div>

html {
  text-align: center;
  margin-top: 50px;
  margin-bottom: 50px;
}
body {
  background-color: #212425;
}
.centered {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}