ves">Contextual alternatives</h2>
  <p>Progress bars use some of the same button and alert classes for consistent styles.</p>
  <div class="bs-example" data-example-id="contextual-progress-bar">
    <div class="progress">
      <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
        <span class="sr-only">40% Complete (success)</span>
      </div>
    </div>
    <div class="progress">
      <div class="progress-bar