First of all, I am a beginner and I do not know how to ask the question correctly, but I hope you can help me.

I want to superimpose two photos and then put a point in the middle that you can drag left and right to display one or the other photo.

This would allow you to show a before and after comparison for example.

My question: Is this possible with HTML + CSS? Or do you need JS? I ask for solution suggestions.