At first a great compliment to w3schools - I learned a lot of html, css, js and more at this site.
Now I tried to implement the code from "create responsive Modal Images with CSS and JavaScript" into my page (https://www.ferienhaus-piemont.info/ausstattung-ferienhaus.php#eos)
It's running perfect with ONE image. What I want to do/ to change it's also running with 2,3 ore more images - not as a slideshow - as single images ???
It's would be great anyone could help me.
Thank you very much.
Klaus