zig Tryit Editor

<!DOCTYPE html>
<html lang="zh" class="svg no-js">

<div class="container">
  <h2>Animated Progress Bar</h2>
  <p>The .active class animates the progress bar:</p> 
  <div class="progress">
    <div class="progress-bar progress-bar-striped active" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width:40%">
      40%
    </div>
  </div>
</div>

</body>

</html>