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Accessibility statement
We want this guide to be readable by everyone, including people who use screen readers, keyboard navigation, magnification or reduced-motion settings.
Effective date: 1 January 2026. Mactria Media LLC is committed to making this website and our publications accessible to people with disabilities, in the spirit of the Americans with Disabilities Act and the Web Content Accessibility Guidelines.
Conformance target
This website is designed to meet WCAG 2.1 Level AA. We treat that as a floor rather than a finish line, and we review the site against the guidelines when we make significant changes. Conformance is assessed against the published success criteria for perceivable, operable, understandable and robust content.
What we have done
- Semantic HTML landmarks so assistive technology can navigate by region.
- A visible “skip to content” link as the first focusable element.
- Text contrast chosen against the WCAG minimums for body text and interface controls.
- Keyboard-operable navigation with a visible focus outline that is not removed.
- Descriptive alternative text on every meaningful image; decorative graphics are hidden from assistive technology.
- No autoplaying audio or video, and no content that flashes.
- Respect for the operating system’s reduced-motion preference; our only animation is a small hover lift on navigation.
- Text that reflows to 320 pixels wide and remains usable at 200 percent zoom.
- No dependence on colour alone to convey meaning: navigation items also carry text labels and a shape change when active.
Known limitations
We are honest about what is not perfect. The decorative book-ribbon navigation uses a CSS clip-path to create its notched end; in the unlikely event that a very old browser does not support clip-path, the ribbons render as plain rectangles but remain fully functional. Our diagrams convey information through colour as well as labels, but the underlying figures are also written out in the surrounding text. The cookie notice is a fixed-position element; on very small screens it stacks above the content rather than covering it.
Publications
The e-book is provided as both PDF and EPUB. The EPUB reflows for screen readers, supports resizable text and includes a navigable table of contents. The PDF is tagged for reading order where our layout tool permits, and a plain-text-friendly structure is used for headings. If a particular format causes difficulty, contact us and we will do our best to supply an alternative arrangement.
Third-party content
This site embeds no third-party content, no remote fonts and no external scripts, which removes a whole class of accessibility problems introduced by widgets we do not control.
Testing method
We test with keyboard-only navigation, a screen reader, browser zoom at 200 percent and a narrow 320-pixel viewport. These checks are repeated whenever the layout changes, and the results feed directly into the known-limitations list above rather than being filed away and forgotten.
Feedback and enforcement
If you encounter a barrier, email [email protected] describing the page and the difficulty. We acknowledge accessibility reports within two working days and aim to resolve or provide an accessible alternative within ten working days. If you are not satisfied with our response, you may escalate to [email protected], and we will treat the escalation as a formal complaint.
Contact
Accessibility desk, Mactria Media LLC, 1180 Mission St, Suite 210, San Francisco, CA 94103, United States. Telephone +1 (415) 555-0143. Email [email protected].