Profile Card Web Component

These abstract backgrounds for component challenges are my new Least Favourite Thing Ever.

I can't figure out how they're supposed to behave responsively and I can't even seem to get them positioned absolutely to match the different device designs.

Partly I consider them window-dressing for a component that lacks a real context (and therefore unimportant), but I still spend too much time compulsively messing around with magic numbers trying to get a visual match.

If you're happy with your background for this challenge, or have seen it done well, please send me a link to the solution!