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<p>Progress bars use CSS3 transitions and animations to achieve some of their effects. These features are not supported in Internet Explorer 9 and below or older versions 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. Alternative methods for setting the widths that are compatible with strict CSPs include using a little custom JavaScript (that sets <code>element.style.width</code>) or using custom CSS classes.</p>
+ </div>
+
<h2 id="progress-basic">Basic example</h2>
<p>Default progress bar.</p>
<div class="bs-example" data-example-id="simple-progress-bar">