adding a scrollbar & captions to thumbnails

I began using CozaStore template and i’ll be glad if you could help me with an issue regarding it. in the product-detail i want to deal with a situation in which i have many pictures, and the overall thumbnail sidebar becomes to long and exceeds the screen. for example (the site was converted to rtl)
how can i add something like a scrollbar that will keep the design intact although i have many pictures?

Secondly, i would like to to add an effect that when you hover over a thumbnail, a caption appears. same as here how can i do that?

Thanks a lot!

Hello there,

I hope you are doing well today.

In this case, it would be best to use a gallery plugin to add the images on the page. Here are a few options:

Best Regards,