Form Design is the design of input fields, labels, validation, and submission flow used to collect user information.
It matters because a website is often the first serious evaluation point for a buyer. Good design reduces confusion, builds trust quickly, supports accessibility, and helps visitors take the next step without feeling pushed.
Example
An inquiry form can show persistent field labels, identify required fields and place a specific error beside an invalid email address. After a successful submission, it should confirm receipt rather than silently clear the form.