Faq Accordion Card Main with Flexbox

What I have learned:

I learned how to position multiple images with position relative and absolute. I also learned to set specific classes in CSS, which I set to specific DOM elements using the classList() method in JS to achieve the desired effect on the screen.

My questions to the community:

The most difficult thing for me was to position the images correctly. Is there a better approach?

I am very happy about any advice!

Best regards Thomas