Lightbox Link: How can I put a view/share button on hover?

Hi,

Looking to put view and share buttons on hover for my lightbox items. The item (poster) should be shared on Facebook. Also, I would like to put a video inside the lightbox link instead of an image.

Please see link: https://www.wrongworldfinals.com/#posters

Is there a way to do this in Webflow or do I need to put in custom code?