@ladyhope You can indeed standardize web accessibility, (see: WCAG), but only to a point. Even the standards will tell you to test with actual users, because there are times when you need to deviate from the standard to create an experience that is useable and inclusive of everyone. However, you need to know when to deviate from the standards and more importantly you need to make sure that you’ve covered all the basics first. The standards are the minimum, not the ideal. Also, you are never going to achieve perfection, and there are times when you need to make a decision about functionality/visuals and how to best accommodate your entire audience.