social-proof-section-master imitation using css flexbox

Hello, congratulations on completing this challenge!!

Regarding with your problem. Remove the .card2 and .card3 , just have 1 class named .card and then try to use the pseudo-class :nth-of-type()

div.card:nth-of-type(1) {
  margin-top: 1rem;
} 

:nth-of-type() pseudo-class targets the siblings of the same type based on its positioning. Which is in your case, the div with the class .card.

Read this for more info :nth-of-type() and If you wouldn't mind, try to look at my solution. Maybe it will help you.