FAQ accordion with HTML and CSS

First, i have to admit this one looked easier than it actually was to achieve a passable solution.

Dealing with the images and how they interact with the accordion itself was my main problem. I'm pretty sure there are easier/more streamlined ways to do it. Because of this responsiveness wasn't really achieved in this solution.

Furthermore, accessibility could also be an issue. On my first attempts I've tried to make it work with <button> tags but wasn't able to achieve the "open and close" functionality the <inputs> ultimately provide.

As always I'm open to hints on how to improve this challenge.