Order Summary Component Using Flexbox

What are you most proud of, and what would you do differently next time?

Making the card responsive.

What challenges did you encounter, and how did you overcome them?

The box with the annual plan was a bit tough to position with all the children item.

What specific areas of your project would you like help with?

Any general feedback is welcomed, but I was wondering how to make those box-shadow under the card and process paymen button. I wasn't sure how I could get the exact color and how to get the same blur and spread.