How do I make the text slide across the div when the div opens?

Question

I can't believe I lost my practice with css but how do you make the text slide across the div as the div is transitioning? Also, how do you make the other div stay open when the other div is transitioning?
https://code.sololearn.com/W9ZQnwZl6UJn/?ref=app

Answer 1

I wrote this code to answer this question.
Please let me know if my take was the same as what you meant. Thanks
https://code.sololearn.com/WDoEqFm2pazS