How to make a slide up animation?

Question

plz define the slide keyframe in my code.
https://code.sololearn.com/Wc3187bKsYRc/?ref=app

Answer 1

https://code.sololearn.com/Wo1C884Qev80/?ref=app

Answer 2

https://www.sololearn.com/post/403148/?ref=app
https://code.sololearn.com/WKKkpq0efxai/?ref=app