I’m trying to get the square box in the middle of the svg.
It’s the png you have as a background image on the SVG element that you want to center right? Are you talking about the center of the triangle or the container?
You can use background-position to center the png (background-position: 50% or background-position-x and background-position-y with whatever values you need).
I got it
.container-left .jacketd .coversvg {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
margin: auto;
cursor: pointer;
background: url("https://i.imgur.com/cZ8OKm5.png") no-repeat 30% 50%;
}