US FE engineer here. I have worked with major online retailers for accessibility remediation after they were successfully sued for WCAG failures. The biggest t

US FE engineer here. I have worked with major online retailers for accessibility remediation after they were successfully sued for WCAG failures. The biggest thing, folks, is your navigation. If you run a large site and users can’t control your navigation with a keyboard at minimum, you’re really leaving people out in the cold - and asking for a lawsuit, depending on the industry and your country. I'm looking at you, dropdowns. Full WCAG compliance is expensive and requires vigilance, but getting your navigation right should be priority 0.