Start with the right HTML
Use a button for an action and a link for navigation. Native HTML elements provide a strong foundation for keyboard behavior and meaning. A box that looks clickable does not automatically gain those properties.
Associate form fields with visible labels. Placeholder text that disappears during typing is not a substitute for a persistent label. People should still know what is being requested after they begin entering a value.
Keep focus visible
Navigate without a mouse. Is the selected control clear? Does the order make sense? A visible focus indicator helps keyboard users understand their position on a page.
When a dialog opens, focus should stay inside it and return to the trigger on close. The native dialog element provides some of this behavior, but the real interaction flow still needs testing.
Give clear feedback
Do not communicate form success only through a button changing color. A short status message should explain the result. An error should tell people what they can fix.
Appropriate live status regions can help screen reader users. Announce meaningful outcomes rather than every minor update to avoid creating an unnecessarily noisy experience.
Make motion a choice
Animation can explain a relationship or make a transition easier to understand, but continuous movement is not comfortable for everyone. Respecting the system’s reduced-motion preference is a useful starting point for disabling nonessential animation.
These steps do not cover all of accessibility. Starting with semantic HTML, keyboard testing, clear language and user preferences nevertheless reveals many issues early in the design process.