The prompt

Build a single-plan pricing block with Tailwind CSS. Centered card with a monthly/annual toggle (annual shows a "Save 20%" pill), a large price, a feature checklist in two columns, and one prominent CTA. Add a small "14-day money-back guarantee" note under the button. Give each toggle button a data-period attribute and ids to the price and the billing note, then add JavaScript that swaps the active pill styling and rewrites the price when the period changes — $29/mo billed monthly, $23/mo when billed annually — and shows the annual total charged up front in the note line.

Paste it into Claude, Cursor, v0 or any AI coding tool. Prefer the finished markup? Open the Tailwind source.