rsions of Firefox. Opera 12 does not support animations.</p>
  </div>

  <div class="bs-callout bs-callout-info">
    <h4 id="callout-progress-csp">Content Security Policy (CSP) compatibility</h4>
    <p>If your website has a <a href="https://developer.mozilla.org/en-US/docs/Web/Security/CSP">Content Security Policy (CSP)</a> which doesn't allow <code>style-src 'unsafe-inline'</code>, then you won't be able to use inline <code>style</code> attributes to set progress bar widths as shown in our examples below