Try my sharing gallery, URL in my signature. Last time I looked it was online, it opened, and it is not for sale!
I have a modal gallery, it is simply called 'Image Gallery'. Maybe you can use that. The image sizes can be changed.
I made that gallery after getting the idea from Wayan, and I know that he has 'refined' it further. He may pop in here before you know it...
OK, Inger, so I downloaded your modal/image gallery file, saved it as a component, and added that to the site I'm working on. I changed the images to the drawings the artist wants on her website. (I've only done the "graphite.html" page with this so far.) But I can't figure out how to make the pop-up image appear, or to add the title & description that will show with the picture. (Ideally, I would have a caption with the painting title, size, medium, & sale price.) I assigned id's to each of the first 2 images on the page, just to test. I tried different settings for the href in the Elements pane, including using the id for the picture--with hashtag, of course. No go. The best it's given me so far is, when I preview it in Firefox & click on the image, it jumps to the page header.
I even tried changing the target attribute to "_blank." That opens the whole gallery in a new tab. I tried to attach the file I'm working on (as a zip file), but both times I've tried posting, it's returned a 500 error. If you need to see the file, I'll try again. Hope you or someone can point me in the right direction!
Thanks in advance!