well done! on completing this challenge, everything looks pretty good, your code is also clean, but I would like to add some points to it,
"how to put the rest of the shadow of the container." I think you meant the black border around the container, the shadows look pretty good to me.
hover effect is missing, it was a core part of challenge I believe you just missed to notice it in the challenge description. why not give it a try, when mouse get hovered the container and image should zoom in a little bit.
these two points sums everything up, Keep Learning! I'm rooting for you, we all are beginner at some point, important part is you took the initiative to learn, like me!
Everything looks pretty good, but shadow is missing, and readme.md could also be updated, its a neat way to introduce the project. HTML and CSS files are well structured!. and one last thing would be to add h1 and p into a seperate container for padding and margin within the card.