Bootstrap 4

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.2/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.2/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.7/flatly/bootstrap.min.css">
<div class="row" style="height:200px;background-color:grey">
   <div class="col-md-10">
      <span>How to center this vertically/horizontally</span>
   </div>
   <div class="col-md-2">
      <span>This too</span>
   </div>
</div>

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Bootstrap 4

HTML

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Fiddle Pages

Use pre-released features

Fiddle collections

Private collections and fiddles

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