Bootstrap class: .offset-*-#

<div class="container">
  <div class="row">
    <div class="col-3 offset-6">
      <!-- Content -->
    </div>
  </div>
  <!-- This class can be used with responsive classes such as -md- as well: -->
  <div class="row">
    <div class="col-md-3 offset-md-6">
      <!-- Content -->
    </div>
  </div>
</div>

Preview

col-3 offset-6
col-md-3 offset-md-6

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