(Solved)How do I put those 4 images inside the grey box I created

Here is my code and I wanna achieve something like this.


I am thinking about changing the the margins of those 4 images individually. Like change the margin from 140px to -200px or something in order to put all those pics into the grey area. Does anyone have other more intuitive solutions???

Never mind… I did it…
Wasn’t even that complicated.