Suggestion: clicking "Donate X$ instead" scrolls back to donation amount

When entering a donation amount less than what's required for a given gift tier, we have "Donate X$ instead" buttons shown below the gifts.

Although those are styled as buttons, clicking them does nothing.

It would be convenient if instead, it would set the donation amount to the amount shown and/or if it scrolled back up to the donation amount input box, allowing the user to adjust the chosen amount.