Make an image for my popup bigger

Image 1 is my current popup. I need the image to fill the popup.
In image two I have added a red square to show what I want to do.

This is the code we tried, but it did not work.

.wpoi-animate {
max-width: 1000px;
}

.wpoi-hustle .wpoi-container .wpoi-aside {
flex: 0 294px;
}