Accessibility and Credits

Our goal

We design this website to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at Level AA. We have not had the website independently audited, so we cannot claim formal conformance. We describe below what we have done and how to tell us about problems.

What we do

• Semantic HTML with landmarks, a logical heading structure, and a skip link to the main content.
• Full keyboard operation of navigation, search, filters, and accordion elements, with visible focus indicators.
• Text and interface colors chosen for sufficient contrast, and information that does not rely on color alone.
• Descriptive alternative text for meaningful images.
• Responsive layouts that work at different screen sizes and with text zoom.
• Support for the reduced-motion preference.
• Core content and navigation that work without JavaScript.

Known limitations

Accessibility is ongoing work. Some pages may contain tables or content that could be improved for screen readers. If you encounter a barrier, please let us know.

Report an accessibility problem

Please contact us by telephone at +1 571-420-6666 or by mail at the address on our Contact page. Tell us the page, the problem, and the assistive technology or browser you use, if relevant. We will review reports and work to address them.

Image credits

Photographs on this website were obtained from Unsplash and are used under the Unsplash License, which allows free use without requiring attribution. We credit the source here as a courtesy to the photographers. Images are illustrative and do not depict our staff or imply any endorsement. They have been cropped and compressed for fast loading. The images do not show vendor product screenshots.