Slider problem, what to do?

Question

css

It should be like this

And it turned out like this

In the picture, the right margin appears and because of this it turns out to be full width, and at the bottom the block is also stretched to full width. I'm new and don't know how to fix this.
Please, help!
Here is the code
https://codepen.io/return65/pen/NQaYOw

Answer 1

and this is how i got it

Answer 2

.team-card_image {
flex: 0 0 290px;
}