Ensure that onboarding buttons are visible, even on short viewports (#2324)

* Ensure onboarding buttons are visible on shorter screens

* Fix dismiss button hover styling

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/routes/Onboarding/InteractiveNumbers.tsx

@@ -14,7 +14,7 @@ export default function InteractiveNumbers() {
     <div className="fixed grid justify-end items-center inset-0 z-50 pointer-events-none">
       <div
         className={
-          'z-10 max-w-xl border border-chalkboard-50 dark:border-chalkboard-80 shadow-lg h-3/4 flex flex-col justify-center bg-chalkboard-10 dark:bg-chalkboard-90 p-8 rounded' +
+          'z-10 max-w-xl border border-chalkboard-50 dark:border-chalkboard-80 shadow-lg h-[75vh] flex flex-col justify-center bg-chalkboard-10 dark:bg-chalkboard-90 p-8 rounded' +
           (buttonDownInStream ? '' : ' pointer-events-auto')
         }
       >