How to create a custom shaped card using html/css

Question

I am trying to achieve something like this: https://pin.it/k7yphnrrrwlmkz. I'm quite acquainted with the use of rectangular shaped card.
I want to create a login page, but ratger than using a card, i will like the container to have an irregular shape. (See the link)

Answer 1

https://code.sololearn.com/WBjeYFNMa3lG/?ref=app

Answer 2

Thank you