Three-Step Gated Checkout
Shipping, payment, review with forward gating and a review screen that summarizes every earlier answer. The pattern the completion data is about.
Create a three-step checkout wizard: Shipping, Payment, Review. Horizontal header with numbered circles, connector lines, checkmarks on completed steps; current step filled indigo-600, upcoming steps outlined and non-interactive. Continue validates the current step inline and advances; completed steps are clickable to revisit and never lose their values. Hold all form data in one parent state object and mirror it to sessionStorage, restoring step and answers on refresh. The Review step lists all answers from shipping and payment with an Edit link per section that jumps back. Use fieldsets per step, focus the first field on entry, and announce "Step 2 of 3" via aria-live. Card layout at max-width 640px, 250ms slide transition between steps, visible focus rings throughout.




